From the OSHA web site:
2012 NAICS Definition
T = Canadian, Mexican, and United States industries are comparable.
811192 Car Washes
This U.S. industry comprises establishments primarily engaged in cleaning, washing, and/or waxing automotive vehicles, such as passenger cars, trucks, and vans, and trailers.
Automotive detail shops
Mobile car and truck washes
|811192||811192||811192||Automotive detailing services (i.e., cleaning, polishing)|
|811192||811192||811192||Automotive washing and polishing|
|811192||811192||811192||Detailing services (i.e., cleaning and polishing), automotive|
|811192||811192||811192||Mobile car and truck washes|
|811192||811192||811192||Truck and bus washes
Description for 7542: Carwashes
Industry Group 754: Automotive Services, Except Repair