I remember reading about the computer glitches. Some were pretty funny. In addition to the robots painting each other, there were robots that were supposed to install windshields that "forgot" to let go of the glass, and pulled it right out of the new car and smashed it into the next windshield coming down the line. Also the story of the robots getting a bit carried away and welding car doors shut. Nice. ; )
As for Roger Smith, I blame him as much as anyone else for damaging GM. Under him, the big cars got downsized and moved to FWD in 1985, and from 20-feet you could not tell a Buick from an Olds from a Caddy. Plus he was largely responsible for moving the G-bodies to front drive in 1987, with the horrible GM10's, which had major rear brake issues, and numerous reliability, paint, and interior issues.
In 1989, GM was losing $2000 on every GM10 it produced. When asked why GM10 was such a catastrophe, Smith famously replied, “I don't know. It's a mysterious thing.
Idiot.