As this is the closets hand car wash to my home, I thought I'd give it a crack after driving past it so many times over the years and wondering how it compared to others. There are definitely advantages in keeping some things unknown and I should have left well alone...
My car is a black Volkswagen Jetta, with cream interior and cream leather seats. I knew I was asking for trouble when I bought the car, however it looks so lovely when it is clean and committed to the ongoing maintenance such a glamorous vehicle would bring.
Splurging for a car wash, I left the car there and went home (just down the road), looking forward basking in the car's cleanliness on my return. An hour later, I came back and wondered why there were so many watermarks on and around the outside of the car. It seems that it wasn't exactly dried in the manner you would expect for a 'hand wash and dry' - ie. actually dried properly with a buffer/towel.
Worse, the inside of the car had dirty hand marks all over the cream interior. Argh! Perhaps it is too much to ask for someone who is cleaning your car to actually be clean themselves, or at the very least remove all evidene of their filth.
No matter, I will never, ever return...

Approximate cost: $35