I can't resist joining in on this one! I literally just got back in after a 50 mile blast with the thermometer showing 33 degrees F. I do have a heater, necessary to pass UK vehicle inspection (SVA). It made little difference today!
I love the looks you get driving an open car in the middle of winter from folks cocooned in their tin tops - is it admiration or pity???
My vote goes to the sheepskin thong thingy.
Wilf, UK