Take on the slow parking lot talker

There really aren't many things I hate more than pulling into a busy
parking lot, seeing a guy get into his car and then wait for what
seems like hours while he warms up the car, makes a phone-call, sets
up his Bluetooth, changes his CD, picks his nose and blows on his
coffee while he completely realizes that I'm waiting for the spot. I
get that he doesn't have to rush but moving at snails pace during a
parking lot rush hour is grounds for a fender-tap