I applied in-person. The process took 1 day. I interviewed at Luxury Wash (Smyrna, GA) in Aug 2013
Interview
You definitely want to dress to impress. Be casual but professional. Prior experience or knowledge about luxury cars is a plus. On the other hand if you don't know much about cleaning cars professionally, just say so.
Interview questions [1]
Question 1
What do you know about the care of luxury vehicles?