I have been pondering this for a few days and my vote is for the Corvette C5.
*It proved that the Americans could build a reliable supercar at a bargain price.
*Did I mention its a supercar that costs only a bit more than a loaded up Camry!
*Powered by old pushrod 2 valve technology and still puts most twin cam 4 valve engines to shame in the hp/liter war.
*Leaves enough on the table for the tuners to find and make absolutely bonkers power and handling improvements.
*Gets over 30mpg on the highway!
*Won international races with it over and over again.
*Took what they learned at the track and applied it back to the street car.
*There is not a single other car sold during this decade that could even compete in its class, nobody even tried, it was a game changer!
