I'm in New England, and the latest snow/sleet/ice storm just left four inches. I did what I usually do with my two conventional gas cars: start them, move them to the street, clean off most of the snow and ice, leave them running with the heat and defrost on high while I clear the driveway, finish cleaning the cars, and replace them in the driveway. The heat from the engine really helps with getting the ice/snow off of the car. This is also helpful when there's just a little ice on the cars, although I'll leave them in the driveway while they melt.
Which brings up my question: can you do this with electric cars? Let's say I had a Bolt, Tesla or LEAF in my driveway, fully charged, but covered in ice. Could I use the heater/defroster to melt the ice off? (If useful, note whether the car would need to be plugged into a charger while this happens.)