Exactly: I have some experience driving in snow and I've certainly made a few big mistakes that I'm pretty sure a computer (that would have a much better sense

Exactly: I have some experience driving in snow and I've certainly made a few big mistakes that I'm pretty sure a computer (that would have a much better sense of available traction) could have avoided. I can also easily imagine sensors that can see through headlight-lit falling snow better than a human.