Enlarge / The #6 Porsche Penske 963 and the #10 Konica Minolta Acura ARX-06 run on Daytona's banking during the 2023 Roar Before the 24. With so many miles of testing completed, the Porsches are probably the favorites, but 24 hours is a long time in racing, and a lot can happen. (credit: Jake Galstad/LAT Images)

BMW provided flights from DC to San Francisco and back, plus five nights in a hotel, so we could attend Monterey Car Week. While I was there, I spoke with people from Acura and Lamborghini. Ars does not accept paid editorial content.

This past weekend saw the successful conclusion of the International Motor Sports Association's "Roar Before the 24," the series' preseason test ahead of this coming weekend's Rolex 24, a 24-hour race held each January at Daytona International Speedway in Florida. This year, the preseason test was more important than most, as there's a new kind of race car, called the GTP, competing in the Rolex 24 in 2023.

The new hybrid prototype category has attracted more manufacturer interest than we've seen in many years, with brands like Acura and Porsche building new cars to compete and others, like Lamborghini, waiting in the wings to join next year. But the biggest question is whether these new race cars will be able to make it to the end of the race. As in the larger automotive industry, supply shortages mean that spare parts are scarce, so the consequences of a crash are calamitous.

But what makes GTP—originally called LMDh—so attractive to car makers? I asked David Salters, head of Honda Performance Development, which oversees the Japanese OEM's racing activities in North America.

Enlarge (credit: Cadillac)

The world of Formula 1 got a shock on Thursday morning when General Motors announced it has plans to enter the championship. GM wants to go F1 racing with its Cadillac brand, partnering with a new Andretti Global team, assuming the sport's organizing body accepts the entry.

F1 has been fixed at 10 teams since Haas joined the sport in 2016. Since then, the series has introduced a new budget cap that has reined in some of the crazier budgets and made the prospect of operating an F1 team much less of a financial black hole. The exact amount of the cost cap is adjusted depending on how many races are planned for a year— for 2023, that should be $138.6 million —and even finishing in 10th place earns a team enough money to cover about 70 percent of those costs.

As a result, the sport is now a much more attractive proposition for new entrants than it was the last time we gained new teams in 2010, none of which survived. But there's a snag: You can't just turn up at the start of a season with a couple of cars and expect to go racing. The sport's organizing body, the Fédération Internationale de l'Automobile (FIA), requires that any new team "buy in" to the franchise with a $200 million "non-dilution fee" meant to ensure a new competitor doesn't cost the existing 10 teams any of their income.

Enlarge / In addition to getting faster over the years, F1 cars have also gotten far more efficient. And that's only going to increase in the coming years. (credit: Jared C. Tilton/Getty Images)

When Formula 1 cars take to the track for the first time in 2026 , they'll do so powered by carbon-neutral synthetic fuels, part of the sport's "net zero by 2030" plan. It's a laudable goal, but, I confess, one I've sometimes questioned. After all, most of the carbon emitted during the course of an F1 weekend comes from the same sources as any other popular sport— the teams and fans traveling to and from the event. But after speaking with Pat Symonds, Formula 1's chief technical officer, I may have been missing the forest for the trees.

"In essence, yes, you're quite right. The total carbon footprint of the sport—of scope 1, 2—is just over a quarter million tonnes of CO ₂ equivalent, and the cars on the circuit represent 0.7 percent of that," Symonds explained to me. "So yes, your premise is true. But we try and take a much wider view. And what I think we have in developing a sustainable fuel and putting it in our race cars is an enormous multiplier effect. The 2 billion vehicles that are out there could use this fuel, and then the 400,000 people driving to [the US Grand Prix] isn't a problem," he said.

Formula 1 has changed quite a bit in the years since Liberty Media bought it at the end of 2016 with bigger ideas than simply sucking revenue out. Instead of pretending the Internet never happened, you can now watch races via F1's own streaming service, a service that has markedly improved over the past couple of years. In the US, a move to ESPN saw the sport go commercial-free during the actual races. And, of course, there's the whole Drive to Survive phenomena, which has boosted audiences worldwide—but particularly in North America, which next year will host grands prix in Austin, Texas; Miami; and Las Vegas.

Enlarge / The exterior clues that this is a Porsche 718 GT4 ePerformance and not a 718 GT4 Clubsport are subtle; it's 140 mm (5.5 inches) wider, and the headlight projectors look more like a Taycan's than a Cayman's. But it's an all-electric car with more than a thousand horsepower on tap. (credit: Jonathan Gitlin)

Porsche provided a flight from DC to Milan and back, and plus two nights in a hotel so we could get briefed on VW Group's next EV platform. We also saw the reveal of its new Formula E car, which you were able to read about last week . Ars does not accept paid editorial content.

FRANCIACORTA, ITALY—The auto industry is in the midst of a mass transformation as we move towards product lineups that are mostly or even entirely electric. Some are handling this transformation better than others, as supply chain problems caused by the pandemic and invasion of Ukraine add further complications. Witness the sorry state of Jaguar, which cancelled an electric replacement for the XJ sedan at the last minute, or the repeated electric vehicle-related missteps we've seen from Toyota , Honda , and Mazda of late.

There appear to be no such woes at Porsche, however. In 2019 it debuted the Taycan , a four-door electric sportscar that remains one of the best EVs on sale . Since then it's added new Taycan variants, two different flavors of EV wagon included, all built in a factory in Zuffenhausen, Germany that's already carbon-neutral . (Porsche's Zuffenhausen factory uses a very heavy mix of renewable energy and biogas from waste materials, and has been independently certified by Germany's DGNB.)

But Porsche isn't resting on its laurels. Fine though the Taycan is, it really is just the start of the OEM's electrified journey—as long as you aren't counting some of Ferdinand Porsche's very earliest vehicles, like the Egger-Lohner C2 Phaeton of 1898 . Future battery EVs from Porsche will use an all-new flexible architecture called PPE—for premium platform electric—which the company is developing together with fellow VW Group sibling Audi (with Porsche taking the lead here).

Enlarge (credit: Jonathan Gitlin)

Porsche provided a flight from DC to Milan and back, plus two nights in a hotel so we could see its new Formula E car, as well as get briefed on VW Group's next EV platform, which you'll be able to read about next week. Ars does not accept paid editorial content.

FRANCIACORTA, ITALY—Last night, Porsche unveiled its latest racing car at its Italian Porsche Experience Center, midway between Milan and Verona. The 99X is the marque's new Formula E car, as Porsche becomes the first of that series' competitors to show off its Gen3 machinery before the start of season nine. That gets underway in Mexico City in mid-January, and good news: Fanboost is definitely a thing of the past .

As the "Gen3" name suggests, it's the third race car design to compete in Formula E, and we've come a long way from the original Spark SRT_01E , which only had enough battery capacity to complete half a race. The new car isn't quite as light as we thought , but at 1,874 lbs (850 kg) it's still a chunk lighter than the Gen2 car, and 220 lbs (100 kg) of that was from the battery.

"Overall, the new car is smaller, is shorter, shorter track width, more agile, it's lighter, more powerful. Compared to Gen2 where we had recuperation of maximum 250 kW (335 hp), we now have 600 kW (805 hp), which is more than double," said Florian Modlinger, head of Porsche's Formula E program.

Enlarge / A Mazda RT-24P emerges from the Catesby Tunnel. (credit: Multimatic)

A tip of the hat to the editor over at Dailysportscar this morning for reminding me of one of the cooler bits of industrial repurposing in the automotive world. It's a Victorian railway tunnel in England that saw its last train in 1966 but is now entering its second life as an advanced aerodynamics test facility and an interesting alternative to a wind tunnel.

The Catesby Tunnel can be found in Northamptonshire, but more importantly it's in the heart of what's sometimes called the UK's motorsport valley because of the concentration of Formula 1 teams—Mercedes, Aston Martin, Alpine, Williams, and Red Bull—and their suppliers. Originally built in 1897, it was part of the Great Central Line and connected London with the industrial cities of Manchester and Sheffield.

But the UK's train network was devastated in 1963 by the Beeching cuts , where 3,000 miles of railway were torn up, market towns and villages were cut off from the rail network, and the nation—like so many others—started becoming much more car-centric. Ironic, then, that the tunnel is, too, more than 50 years later, thanks to a company called Aero Research Partners.

Enlarge / A Firestone race tire made from guayule plants, pictured next to the little woody shrubs that made it possible. (credit: Bridgestone)

There's still a lot of petroleum hanging onto electric cars, specifically around the rims. It takes about seven gallons of oil to make each standard car tire , and the world produces more than 2 billion tires every year . Now, some tire companies are turning to a desert shrub and a novel means of pulling natural rubber compounds out of it.

Bridgestone Americas has been working with guayule ( Parthenium argentatum ) since 2012. The tire company broke ground on a research facility in Mesa, Arizona, in 2012, started evaluating sample tires in 2015, and received multiple grants from the US Departments of Agriculture (USDA) and Energy for its research and molecular breeding work. Just last month, the company committed another $42 million to expanding its harvesting partnerships, with 350 acres in the short term and 250,000 more planned. That's part of more than $100 million invested into guayule-based rubber, the company says.

"With guayule, we can reduce the environmental impacts that come with overseas sourcing while also realizing a more sustainable agricultural system for parts of this country that are facing persistent and worsening climate conditions, so it’s really something with many benefits for our environment and our economy," said Nizar Trigui, chief technology officer for Bridgestone Americas, in a press release .

Enlarge / Porsche knows the road to a Le Mans win involves tens of thousands of miles of testing. (credit: Jonathan Gitlin)

Porsche provided flights from DC to Daytona Beach and back, plus a night in a hotel so we could attend its private 963 test. Ars does not accept paid editorial content.

DAYTONA BEACH, FLA.—Car companies like to keep new models far from prying eyes during the development process. That goes doubly so when they’re going racing, like Porsche is with its new 963, which made our invitation to watch the car test on Friday, while still in development, a rare chance to watch expertise at work. Doubly so considering that Porsche's partner with the 963 is Penske Racing, an organization that has racked up more than 600 wins across a range of disciplines over the past 56 years.

The 963 has been built to win the 24 Hours of Le Mans and endurance races like it and will compete next year in IMSA's new GTP category as well as the FIA WEC's Hypercar class. Built to a rule set known as LMDh , it's more of a collaboration than the Porsche crest on the nose might lead you to expect. Multimatic in Canada provides the car's carbon-fiber spine, or chassis. Xtrac supplies the transmission, Williams Advanced Engineering provides the lithium-ion traction battery, and Bosch is responsible for the electric motor/generator unit, all three of which are tightly packaged together.

But Porsche has built the twin-turbocharged 4.6L V8, which traces its roots back to the mid-2000s RS Spyder race car, with a road-going derivative also found in the 918 Spyder hypercar. Power is capped at 680 hp (500 kW) for the internal combustion engine and hybrid system working together and is measured by sensors to ensure no one gets over-creative.