I used to have to parallel park my truck at my old apartment. It was an upscale place and one morning I awoke to a Lexus about 4" from my front bumper and then a BMW about 6" from my back bumper. I walked around my truck and checked out the spacing wondering what the heck these people were thinking. Lucky for me, I am pretty skilled and have good judgment as to where my vehicle is. It took me a good 10-15 back and forths, but I made it out of there clean.