HLS, I wasn't saying you avoid GM because of this program. I know why you avoid GM, and your reasons are valid IMHO. What I was saying is department stores, electronics stores, etc. have been offering a money back guarantee (what you call a 'trial ownership') for decades.
Of course doing research on something you wish to purchase, and talking to existing owners is a good idea. All I am saying is it doesn't matter how much someone else likes it, or how good the reviews are, you may love it when you test drive it, and the day you get it home, but after you drive it for a couple of days, you may start to hate the way it feels, steers, the way the stereo sounds, or anything else. If that is the case, GM is giving you the opportunity to return the car. I don't see that as trying to cheat poor people. I think it's a damned good idea.