Back in the 1980s, Buick sold one of the greatest turbocharged coupes ever: the Grand National. It was pretty much a skunk works project a team of enthusiast engineers developed and managed to convince management to build. And we thank them for that, we really do. Powered by a turbocharged 3.8-liter V6 with 245 horsepower and 360 lb-ft of torque (which GM underrated), the all-black Grand National GNX was launched in 1987 as sort of a farewell gift.

The Grand National first appeared in 1982 but '87 was to be the final production year. All told, just 547 GNX trims were built and they were further upgraded by McLaren Performance Technologies. Obviously they're quite special, and now one particular GNX has just crossed the auction block. Selling for a final price of $106,400, GNX #482 is in 100 percent original condition and has just 11 miles on its clock. Even the original window sticker has never been removed. Nor has the car ever been washed. It still has the original temporary tags, invoice and purchase order. The car was bought new by the Miller Beer Brewing Company, but it found its way to the Barrett-Jackson auction earlier this month in Scottsdale, Arizona.