1958 Oldsmobile. Fuel filler was under the chrome fin above the driver's side taillight. You flipped the fin to the side to access it. Guess they didn't want to break the lines of the sheetmetal above the side strakes. Curious attention to detail on a vehicle that had terrible overall fit and finish. This beast weighed 4,900 lbs. (2,200 kg), was not particularly roomy, was difficult to enter and exit, handled terribly, got single-digits gas mileage, and was unreliable. Other than that, it was perfect.