The Buick Grand National was an unconventional car, to say the least. Rather than sticking with the traditional American muscle car formula of squeezing a large-displacement V8 under the hood, GM engineers tried something different: a V6 with a turbocharger. This configuration was a major risk, since turbochargers were still in their infancy when Buick launched the first turbocharged Regal model in 1978. But, after working through a steep learning curve, the configuration produced some astonishing results.

What is the fastest production Pontiac Trans Am? This question is the source of much debate, since many factors contribute to its answer, including driver skill, altitude, and tire compound. However, there's no question that the 1989 20th Anniversary Edition Turbo Trans Am is one of the fastest T/As ever, if not the fastest. Car and Driver magazine clocked this limited-production car at a blistering 4.6-second 0-60 time, calling it "the quickest 0-60 sprinter available in any US production-car showroom at any price." The car's 13.4-second quarter mile time may not sound particularly fast today, but in 1989, it was comparable to that of Ferraris and Lamborghinis. It wasn't until almost a decade later, and the release of the LS1-powered fourth-gen cars, that another production Trans Am could come close to these figures.