Corvette C4 ran a full 12 years and was upgraded every year as it rolled out from Bowling Green, KY to every person lucky enough to own a piece of auto history. Rewind the clock to 1990 and you will find a headline in every auto magazine that featured the awesome C4 ZR-1. The 1990 Corvette ZR-1 set the highest 24 hour 5,000 mile land speed by averaging over 175mph. Yes you read that correctly, 24 Hours and average 175+ mph. GM used their proven motorsports department to make the C4 the base of what GM racing is today.