1987 Buick GNX

Buick built this modified Grand National for only one year, and it was a test run, which explains the “X” for experimental. It was the fastest production car in the world at the time, with a 3.8-liter V-6 that churned out 276 hp and 360 ft lbs of torque, at least according to Buick.

When it hit the dyno, those numbers jumped to 300 hp and 400 ft lbs of torque, more than ample to allow the 1987 Buick GNX to reach 60 mph from a standstill in 4.7 seconds. (For the record, that was faster than a Lamborghini Countach and that year’s Corvette.) It’s no surprise that the power train was so impressive—Buick had help from McLaren (yes, that McLaren) to sort out the engine and suspension.