I once drove our old 26ft toy hauler back from Big Lake when we (my family) were motorcycle ice racing one weekend. It seriously dumped while we were out there. They had to plow between sessions to keep the track clear of snow buildup. We had an easy 3-4 feet on top.
We even stopped to shovel off the build up on the way home. Winds were howling at the time….I've never been so unnerved driving ANYTHING! It was gnarly.
Heed what bit of common sense you're blessed with.