Rover. They were independent, then owned by British Leyland, independent again for a couple of years before being bought out in the late 80's, fell under ownership of BMW in the late 90's and finally disappeared in 2005.
I guess Hummer, I mean they did deserve to die, but I would like to see what would they make after they learn from their mistakes.
Zastava Rover Moskvich Saab Pontiac Talbot Lancia (they have just 1 model, and it's only sold in Italy)