Just thinking back to the 50's-70's.........a great place named Johnny & Mack........."by the RR track". they did it all!.............had two outside lifts (in addition to the ones in the shop) which they used for steam cleaning.........in 1967 when I brought my Avanti down to so Florida I brought the car in for a complete steam clean........engine and chassis.........ahh,- to find a shop today with an outside lift and a Steam Jenny!!