A roadster is a type of open-top, two-seat automobile that was popular in the early 20th century. The term can also refer to any small, lightweight convertible car with minimal amenities and sporty handling characteristics.
I've had my M roadster for two months now. (cars.com)
The car is a two - seat roadster with an extended front side as the distance between the driver and the front wheels is fairly long. (thesupercars.org)
Called the TT - RS Plus, this new model will be offered in both coupe and roadster versions. (topspeed.com)