You guys are making me so jealous I've turned all nostalgic so had dig about into my back catalogue of race cars I've helped create while racing behind a desk or CAD screen
Favourite Car with a Roof - 1995 McLaren F1 GTR V12 powered, World GT Champion, 1st Le Mans 24hr winner for a manufacturer winning on the 1st attempt, driven by the 1st winning Japanese driver and last production road car based racing car to win
Best Rule Loophole Race Car - 1999 Benetton B199 Renault V10 powered, extreme lightweight 12 lap qualifying only F1 car, the FIA changed the rules for the following season banning qualifying only cars
Fastest Race Car - 2006 Honda Bonneville 400 V10 land speed record car, based on a 2005 Honda RA107 V10 powered F1 car, still holds the F1 speed record and held (may still hold) the SCTA Class F Unblown Lakester record, ran 246.98mph on the Bonneville salt flats
Broke the Championship Race Car - 2016 Prema Powerteam Dallara F316 Mercedes powered, aim of the project was for Lance Stroll to have enough F1 super license points to race in F1, a small team attacked European F3 in the way we would if it was F1, the FIA changed many rules we exploited as the championship was in real danger of collapsing due to too many unhappy other billionaire dads threatening to pull out their kids
Favourite Honda Powered Race Car - 2021 Redbull RB16 Honda V6 Hybrid powered F1 car, been very lucky to have helped Honda create 18 Honda powered F1 cars but this car makes the top spot as it gave Honda their first F1 world championship in 30yrs
The above only makes up a 10th of my racing car list but these make my top 5 'favourite race cars in no particular order' list