I did that one time, I was Bored/wanted to make an attempt at hyper-mileing. taped over every crack save for the drivers door. of course I used Blue painters tape.
looked rather stupid driving to the airport, and sitting in longterm for a week, but, eh...
maybe eeked out a couple extra mpgs..
sometimes you just need to find a way to amuse yourself/keep yourself busy.
once I did do it with duct tape, trying the nascar front downforce trick. took the already peeling clear off.
ended up having to have the bumper replaced later anyway... so whateves...