runabout

Any of several small vehicles, especially a small motor car for use on short journeys.

The door being open, Stranleigh walked in unannounced. A two-seated runabout[…]stood by the window, where it could be viewed by passers-by. Further down the room rested a chassis, […]

A motor car having a single row of seats.

A light, open, American horse-drawn vehicle with four large wheels.

A gadabout or vagabond.

A small, relatively maneuverable spacecraft or shuttlecraft.