Considering that it was offered in the Harley-Davidson lineup from 1932 to ’74, it’s hard to call the three-wheeled Servi-Car a dead end. But few Servi-Cars ever served their initial purpose.
The idea was, garage operators would send a man out on the Harley to collect the customer’s car. The delivery driver would then attach the trike to the customer’s car’s bumper, and tow it back to the garage. After servicing the customer’s car, they’d return it to the customer with the Harley in tow. Then they’d unhitch the hog and return to the garage.