I must've missed this thread when it was posted... great vid, Marc!
I have a totally different way to wash vehicles in the winter. I usually run the garage thermostat up to around 70 degrees and go back out in half an hour or so.
When I built my secret Lair 16 years ago I spent more time planning the garage than I did the rest of the house. Finished and insulated, door sweeps, floor drains, hot n cold running water and a 75,000 BTU Reznor hanging in the corner. Yeah, you have to dig the crud out of the drain pits once or twice a winter but we all have our crosses to bear.
Face it, all a guy needs is a nice garage with a cot, microwave, fridge and a coffee can in the corner. For some reason the wife insisted on frivolities like bedrooms and bathrooms. Go figure. With an attitude like that it's a good thing I fired her.
TL