The fastest American car ever built at the time of its release — with a top speed of 124 mph — is the 1987 Buick Grand National GNX. It features a 3.8-liter V-6 engine driven by 276 horsepower.
But more so, it proves that the original Buick Grand National, a beloved performance icon of the 1980s, is a timeless classic that's still capable of some pretty awesome things.