Over 20,000 of the all-black turbo-V6 powered Buick Grand Nationals were sold. But only 547 GNXs had the bigger turbocharger and other performance options that boosted the sticker price by $10,000. It was considered the fastest production car of the '80s and, until the Buick Regal GS, the last real Buick performance car.
Hagerty Insurance says these 10 relatively affordable cars will likely become collectibles and will sell for big bucks at car auctions decades from now.
Find Your Next Car 
