I couldn’t work this sign out when I walked by it in Tucson. Having checked, it’s a long-standing sign which advertises Clyde Wanslee Auto Sales in the city. The sign is actually located opposite the business, so it isn’t immediately obvious what the sign relates to.
Strangely though, the sign succeeds in making me trust the company. If I ever wanted a car (unlikely to be fair) in Tucson then I’ll be there…..