If you are looking for genuine car care and dependable engine maintenance service in Tucson, Arizona, there’s only one trusted center to go-Ed Cain’s. Ed Cain’s Auto Service has been providing quality car care in Tucson, AZ since 1960. If you are looking for genuine car care and dependable engine maintenance service in Tucson, Arizona, there’s only one trusted center to go-Ed Cain’s. Ed Cain’s Auto Service has been providing quality car care in Tucson, AZ since 1960.