Car parks are a constant nightmare for me too. I get dinked all the time in my work car park.
I part in the furthest away space and sometimes go slightly over a zig zag bit at end of row, still leaving room for people to get through to exit. Got told by car park sergent major not to take up two spaces. I explained I wasn't, that my door gets hit etc, but it fell on deaf ears, so I no longer went slightly over the line. Now someone bl$$dy parks there and every other zig zag bit in the car park. It makes me want to go mental.
My stress levels go through the roof with careless idiots who hit your door and don't give a toss