Interesting (and clever idea), but immediate concerns come to mind: 1) "Wherever it is located" might be the wrong approach. In a place like NYC, I can assur

Interesting (and clever idea), but immediate concerns come to mind: 1) "Wherever it is located" might be the wrong approach. In a place like NYC, I can assure you that if your car is parked on, say, 74th & Lex, you're not going to get away with doing a car wash there. Same goes for almost every commercial parking lot in the city -- they're not going to let a random guy come in and start washing cars (they don't let owners do that). 2) As others have pointed out, there are environmental considerations here, not for tree-hugger reasons, but for legal ones. Car washes are one of those things that many places are quite strict about technically, but when it's applied for personal use it's overlooked. So in other words, Jonny Law isn't (necessarily) going to give you a ticket for washing your car in your driveway and not recycling the wastewater/solvents/etc., the situation becomes completely different when a commercial enterprise is involved. Similar to my point above, you can bet your bottom dollar that NYPD is going to give any semi-commercial car washer a VERY hard time if he's found washing a car on any public street in Manhattan. Likewise for the local PD of a smaller town if it's a guy washing cars in an office parking lot. This may be the sort of business that works only in suburbia or places where a Cherry-supplied vendor is literally replacing a guy in his driveway - which, to end on a positive note, is most of the country.