His speed against the best in the US is clear from results and he’s taken on plenty of ex-F1 talent and got the better of them during his endurance and Indy exploits.
Whether his speed would directly correlate is another question, but as Fernando Alonso has proven, being on the other side of 40 doesn’t mean you can’t deal with F1 demands.
The Brazilian would have to get up to speed fast but there’s no reason why he couldn’t be semi-competitive in a test for one of the teams.
Race of Champions
This is already on the agenda but Castroneves will be going head-to-head with multiple-time world champions from across motor sport in Race of Champions.
Alongside reigning ROC victor Benito Guerra, he will be representing Team Latin America in the snow of Sweden.
While the Race of Champions is all but an exhibition event, the drivers will bring a competitiveness and put one another to the test.
As well as attempting to claim the ROC Nations Cup, Castroneves will be competing against the likes of Sebastian Vettel, Sébastien Loeb, Mika Hakkinen and Jimmie Johnson for individual honours.
Nürburgring 24 Hours
Castroneves’s European excursions don’t have to stop with Le Mans. A visit to the Nordschleife would represent something of a ticking off of the bucket list for him.
“Spending 20 years in one series [IndyCar], you don’t think outside the box. To be honest, I should, because I want to do all these races: Daytona, Le Mans, Spa, Nürburgring. How awesome would that be?” he told Autosport in 2018.
There’s plenty of scope for the Brazilian to add another endurance racing crown jewel to his collection. The Penske-Porsche line-up in LMDh could potentially open up some doors for a potential drive in the event.
Again there would have to be some conscessions made if he was to compete in a full IndyCar season and drive in the endurance race but once more, time and speed are still on Castroneves’ side.