Actually, I think you guys are being a bit excessive. I drive a box and have a handicap plaque. In fact, one of the jokes I have about the car is it is a 12K knee exerciser. In all honesty it has helped my knee, but it'll never be perfect and long walks are still way too painful (one of the reasons I have the plaque).
If the door did not open as wide as it does, I could not have bought the car either. That wide door makes it possible to get in, and out, without putting too much stress on my knee. So give the handicap person driving a Boxster a break. Or if you are going to complain, just complain because he/she didn't park between the lines.