A vehicle assembly includes a two-wheeled vehicle including a frame having opposed sides, opposed front and rear ends, and a front wheel mounted for rotation to the frame proximate to the front end of the frame positioned in front of an opposed rear wheel mounted for rotation to the frame proximate to the rear end of the frame and that is substantially in-line with respect to the front wheel. A member is carried by the frame of the vehicle between the front and rear wheels and has end portions disposed adjacent to the respective sides of the frame. A wheeled stabilizer assembly is carried by each of the end portions of the member to wheelingly interact with the ground over which the vehicle is driven along the sides of the frame proximate to the front and rear wheels of the vehicle.