Mr. Goodwrench Key Fob, circa 1980

In 1974, General Motors launched Mr. Goodwrench, an automotive service program across all GM dealerships and brands. GM dealers were required to maintain high levels of factory training for their mechanics, keep replacement parts on hand, and provide service amenities for customers. An advertising campaign featured "Mr. Goodwrench" himself -- the helpful mechanic who could fix whatever ailed a vehicle.