[911Rob]

never owned one, but thought about it; how about a carwash?

I built one in Calgary for a guy who made good money at it.
A couple years later his accountant came to me asking all kinds of questions about building one for him; he said the guy was making a ton of dough..... intrigued me, but to no avail.

A local architect owns one of the carwashes where I live now and says he does well with it too.

Seems to go along with your vein of thought?