Two things bombed Detroit.

First: NAFTA. All unions where for it, until they found out that the jobs would be moved to Mexico, where labor was cheaper.

Second: Japan and Korea started making a better product at a cheaper price counting the drop in wages for moving jobs to Mexico.

Finally, how did Detroit expect $15.00 an hour workers (most of us) to buy $75.00 an hour workers (UAW workers) cars and still make a profit.