Drove our Smart home last night in about 3-5 inches of the white stuff and I gotta say she's a handfull even at 25-30mph. This is especially true when going up small hills and the tranny downshifts, then it really tries to get squirrly. I will definately be getting new rims and some Blizzaks next fall, for right now thank gawd we have the Honda Pilot.
I might add though: once home I tried her out and this is the Dounut making machine for the driveway, gotta love that short, short wheelbase !!