boxster spyder owners: touchless car washes?
 

has anyone tried?

Not a good idea. See the owner's manual.

Why bother. The cars are so small, it only takes a few minutes to do it yourself. For me that's part of the fun of owning a sportscar.

not when it is 20 degrees out. i like to wash every week.... in the winter, the water freezes before you can dry it

I feel you. It gets cold here too. But, I don't drive it when the weather's bad (including too cold) but other's do. You've got to do what works for you. I would find a car wash that has closing doors front and rear for the most inclimate weather. But, per Porsche, they don't recommend these going through high-pressure car washes.