Buick Reatta
There were a lot of interesting cars that GM built in the 1980s and the Reatta was one of the rarest. This compact Buick sports car was only sold for a few years and it had a host of new technology. The dashboard was completely digital and the car had a lot of new technology that improved the way the car drove (via Hemmings).
Its performance was also excellent considering the size of the car and its handling was praised by the automotive press. Unfortunately, the car wasn’t a great selling product for GM and it was discontinued shortly after hitting the market.