Well, my experience with this game is the same as the others.
My original works fine, but the copy had the problem with not being able to get out of cars.
Today I tried something different. I replaced the "T" key for action/grab, for the "return" key, maintaining the "space" key as well.
Now I can get out of cars using the "return" key. No problem whatsoever.
The "space" still doesn't work for getting out of cars, but the "return" key does.
I'm enjoying very much the game. Others can try this and tell if it works for them.
See ya'll.