An auxiliary seating unit is designed for a vehicle with a bed, such as a bed-type all terrain vehicle or pickup truck. The seating unit is designed with seats mounted to a support frame, the support frame having portions which rest squarely atop the vehicle's bed surface, white upper portions of the frame juxtapose and reversibly attach (using pins and cotter keys, nuts and bolts, or other reversible attachment means) to the upper margins of the vehicle's bed fence. Seats are securely attached to and supported by seat supports which extend from the portions of the support frame which attach to the vehicle.