Never banged my shin on one...ever...but I tend to give any parked vehicles a decent gap as I don't want something I'm carrying to inadvertently scratch someone's pride & joy / piece of s**t (delete as appropriate).
Did manage to ski into a car park barrier once though - but my excuse was that it was covered in lovely powder and I was using the car park as a short cut to the ski-in area of my hotel - now that hurt...a LOT :x