Oct. 10, 1965 - The World's Longest Car makes Its Début In London Checker Aerocar Eight Door And Seats 12 People The World's Longest Car made its Début in London yesterday. Its the Checker Aerocar, manufactured by Checker Motors of Michigan. The Aerocar is 22ft 6ins long, has eight doors ans can seat 12 people. It is in London at the moment for the Motor Shows which opens next week. the cost of the car is £2,950 if you want to buy it at the Motor Show. Photo Shows: One side of the car with its four doors open.