I carry a long handled round mouth shovel in my truck all the time and add a very large long D-handled show shovel in the winter. For years I have used a plastic scoop version but had difficulty with crusty snow last year so yesterday I bought an aluminum version.
Holy cow, Mike, have you been peeking into the back of my car?
Very similar setup here:
- A long-handled spade, always, for fighting "found" grassfires, liberating small pines under power lines, and chopping concrete snow from under a high-centred Mazda; also passable for parking lot deterrence/self-defense, I guess
- In winter: add a real snow shovel, plastic or aluminum but not too heavy; useful for clearing a 20' path through the occasional (but very dense) drifts that will otherwise bury a small car. In light, powdery Prairie snow, you don't exactly dig, but use a slow and steady sweeping motion to move the snow to the side, maybe 6" at a time, and switch left/right hands regularly to spread the load around (old farm trick to "rest" muscles while you keep working; same with switching sides in a canoe).
I have a square shovel (about 12"x12") that I really should carry, but I need to swap it to a longer and lighter handle. With a cutting bevel, it would handle most of the occasional spade work.
I have a Cold Steel shovel in each car too, but more for walking out than digging out. It sits in the "transfer kit" that goes from my/DW's car to the trunk of the inevitably unprepared friend/client in a second. Provided you are strong, flexible, and highly motivated, you could sweep away a lot of snow with one. Better than your hands by far. But absolutely no substitute for a genuine shovel.
(Sorry about the length, I seem to be writing a novel here. Sheesh!)