We hear at least 3 pages a day of the sort, "Will the owner of a red Chevy pickup, license number XXX 555 please move your vehicle, it's blocking the commercial loading area".
As for those who park in front of the door of a store, people should just crawl through if it is unlocked or over if it is.
I saw a photo once of a BMW parked in front of a fire plug with the windows broken out and a 4 inch fire hose passed through. Of course, the coupling was a little leaky and the car was full of water.
People who park blocking fuel pumps would stop if they came out and found hose scuff marks on their paint from people pulling up close beside them and filling up by stretching the hose across their car.
