The ideal vehicle for slippery conditions is actually rear wheel drive, with ABS brakes. RWD means that everything you do reminds you that it is slippery and so you never get going fast. 4wd/awd means that you get going fast enough that you end up well into the ditch instead of just stopped on the side of the road where you can push yourself out without a tow truck.

The above is partially tongue in cheek, but there is a point worth thinking about.