I lived in Michigan for ten years, very close to the eastern shore of Lake Michigan, and only shoveled the driveway once, after the New Year’s storm of, I think, 1998 or ‘99 when we had about two feet at one time. All of the other storms that we had for all of the other ten years were < 4”, and I could drive over it, pack it down, and let it accumulate over the season, if it would.
But no one with a Toyota Camry is going to “just drive” through 6” or more of heavy, wet snow, or 10” or more of the lightest powder. (And even that much “light, powdery” snow will pack down and prevent movement of the vehicle if the wheels aren’t in contact with the ground in some way.)
In addition to the foregoing, there is a legal responsibility for sidewalk owners to clear the sidewalk after snowfall, “whether we think it needs it or not”. By the same token, if you have home mail delivery (or newspaper, milk, or any other routine delivery) – or even social visitors – then you have a huge liability issue if they slip and fall on uncleared snow and ice, and you haven’t even made the barest attempt at clearing the snow. That’s prima facie “negligence”, and you’d lose the lawsuit immediately.