Yeah, but they did take the trouble that you could "bust" the glass and the lights, and with the headlights and taillights themselves, plus people who can get in or out of them.....
What I never see is anyone just getting in and driving away, or someone just parking the car and walking away.....Except, if you damage the car, and the occupant will get out to come after you, then you shoot him/her.....Too bad you can't have Jimmy hijack the car, you would think with all that GTA technology, that you could at least do that....