Abstract: A special `kart`-type vehicle is disclosed having independent suspension on all four wheels, featuring a rigid central structure which cradles the driver seat, and incorporating interchangeable and adjustable mechanical features designed to give adaptability to different conditions of use, and to the physical stature of a given rider. The special kind of adjustable, accessory-orientated design is such as to recommend the vehicle for dirt track, rough terrain and general off-highway use as well as for running on metalled road surfaces; likewise, a vehicle of the type might be used either for utility purposes or simply for sports or liesure activities.