I'm handicap, but my roommate who drives me around isn't...and sometimes when he gets out of the car and comes around to help me, people say nasty things to him thinking he's just trying to get a free parking spot, but he is actually driving me around....he doesn't drive my car unless he's taking me someplace.
So, I know how it is...when a parking space is for a handicapped person, and they can't find an open spot, they do get angry. Luckily, when we can't find an open spot, he just drops me off at the front door and then goes and parks in a regular spot.