The heel/sole part of the footprint is suspiciously similar in size and shape that made with the lower edge of your hand when clenched into a fist. The toes are suspiciously fingertip sized too. Some drunk fucker has just put a bunch of made up "foot prints" on the car. You can even see a bit of the arm print in the one on the roof. I'd guess the far side one was made from the opposite side.