With an Operating Lease you can hire a smart for a fixed period of time. Your monthly rentals are based on the difference between the value of your smart at the start of the contract and its projected resale value at the end (plus finance charges). That means you only repay part of the smart's value, which means lower monthly rentals. At the end of the contract simply hand the smart back (there may be excess mileage or damage charges to pay). You're then free to lease another smart or buy one of your own.