Why do they always hinge on the pass side and the tire is generally on the pass side of bumper too. Is there some unknown reason I am missing for that? I was thinking why not put on drivers side since it would be directly behind driver you wouldn't loose as much rear visibility. Basically you would have to be looking completely turned around to have it obstuct view whereas on the pass side you can look over your shoulder and obstuct view. Does that make snese to anyone?