Abstract: A rider propelled vehicle, particularly designed for use by children as a toy, includes an outer-large diameter wheel having a seat frame located within its periphery. The frame is operatively connected to the outer wheel at two spaced points by an arrangement which permits the outer wheel to move through the frame and rotate about its own central axis. The seat frame includes a foot drive mechanism operatively engaged with the outer wheel forwardly of the center of rotation of the outer wheel for rotating the outer wheel upon operation of a foot pedal by a person on the seat frame. A pair of laterally spaced ground engageable steering wheels are rotatably mounted on the frame on opposite sides of the outer wheel rearwardly of the center of gravity of the frame and of the center of rotation of the outer wheel, thereby to resist undriven rearward rolling of the outer wheel and to permit the rider to steer the vehicle.