American Supercars Corvette ZR1 and Czinger 21C Set New Speed and Lap Records

General Motors’ 2025 Chevrolet Corvette ZR1 has officially exceeded 215 mph in testing, becoming the fastest factory‑produced car ever built in the United States. The twin‑turbocharged LT7 V8 delivers 1,064 hp and 828 lb‑ft of torque, and the model previews production in spring 2025 with deliveries slated for summer, priced around $180‑200 k.

Los Angeles‑based Czinger Vehicles’ 21C hybrid hypercar, built with more than 350 3D‑printed metal parts and a twin‑turbo V8‑electric drivetrain producing about 1,250 hp, set a new production‑car hill‑climb record of 48.83 seconds at the 2024 Goodwood Festival of Speed, beating the previous Rimac Nevera benchmark. The 21C also broke five production‑car lap records at California tracks, showcasing a Human‑AI design process and advanced manufacturing that aim to bring hypercar‑level performance to a U.S. factory setting.