The Chevrolet Corvette ZR1X has been reported as america's quickest production car, with some outlets citing specific performance metrics. There is some variation in the reported acceleration times, but the car is said to have completed a quarter-mile run in under 9 seconds and achieved 0-60 mph in under 2 seconds, with one outlet mentioning a 1.68-second time. The Corvette ZR1X's performance has been compared to other high-performance cars, including the Dodge Challenger SRT Demon 170.