Just bought a Corolla. It's all about reliability.
You would think that GM would have clued into the fact that their design stinks, they aren't innovative, and that the public craves both.
The interior of GM cars looks something like a booster seat at McDonald's.
If they'd get their act together and even just ape Volkswagen, their sales would be far better.
Then there is that whole issue of being about 5-years behind, all the time.