I had a couple delivery-driving jobs during my school years --- at the last one, we had the heaviest Class C vehicles available for our entertain.....errr....use. A couple times when delivering to large, open, level, recently-graded jobsites (in Spanish Springs for instance) the snow was just too slippery and I'm afraid the big diesels got a bit squirrely.
Like 360 squirrely. I wish I had a video of that.