Would like to know around what year that hot wax was put into automatic car washes.
Answers (1)
Hanna Industries (manufacturer of car wash equipment) made two important inventions in 1975 — the automatic wheel cleaner and a polish ‘n wax application. These innovations made it possible for many car wash operations with Hanna equipment to stay in business because they had a “competitive edge” with services their competitors did not have.
Source: hannacarwash dot com