IMSA PROTOTYPE CHALLENGE Steven Thomas Date of birth: Wednesday, July 12, 1967 Country: USA Class Gallery DRIVER HISTORY POINTS STANDINGS SEASON 202120202019201820172016 Newstest No. 48 Ally Cadillac DPi Returning for IMSA Michelin Endurance Cup... Marco Andretti Puts Sports Car Thoughts into Action Aston Martin Valhalla to get AMG power