General Motors has been known for building a fair number of lousy cars over the years. Most companies have built some stinkers, but GM seems to have a reputation for it, particularly during the dark days of the 1980s. One of the most infamous bad ideas to come out of GM during this era was the Cadillac Cimarron, a luxury car based on the J-body Chevy Cavalier. Other domestic J-platform cars included the Pontiac Sunbird, Oldsmobile Firenza and Buick Skyhawk. Most Cimarrons (and J-bodies in general) I see these days are beaters, and I'm pretty certain that some if not most of the cars in this post have since been scrapped.
1983 Cadillac Cimarron, San Francisco
1984 Cadillac Cimarron, San Francisco
1986 Cadillac Cimarron, San Francisco
1987 Cadillac Cimarron, San Francisco
1987 Buick Skyhawk, San Francisco