I do. I found that out pretty quickly. The Ford Taurus heater crashed and died somewhere around Knoxville. I dug my winter boots out of the trunk (haven’t worn them in 8-1/2 years) and piled on the layers. I looked like the Michelin Man.

Some kind gas station attendant mentioned that Wal-mart sells portable heaters that you plug into your car adapter. Score! Unfortunately, it really did nothing more than keep the windows from fogging up to the point where visibility is laughable. But by stopping every 1-1/2 hours to warm my feet, I survived the trip.