Washing Cars, here's my take on it...

- Summer/Warm weather I do it by hand
- Winter, I use only 'high end' all cloth car washes

Personally, I would NEVER use a completely 'Touch-less' car wash. They use such harsh chemicals that it will literally strip the paint off the vehicle.

I Zaino regularly, and the roof isn't all that bad, you just need to get creative with it is all.

Just my thoughts.