of the vehicle illustrating the body curvatures the rider inclined riding surface bed including the 11 u2033 diameter high speed pneumatic tubeless tires in the preferred embodiment of the vehicle which are designed for motor vehicle racing at speeds in excess of 100 mph and which provide excellent traction and a soft but firm ride advanced four wheel u201c a u201d arm air spring oil damped suspension u2014 independent four wheel suspension with air oil shocks or with coil oil shocks is provided and yields a smooth stable ride over surfaces with irregularities ranging from wash board to large bumps however not all four wheels need have suspension possibly only the front wheels might have suspension also the vehicle could be made in either a four wheeled or three wheeled embodiment in either embodiment the suspension is not essential fig3 illustrates a three 3 wheeled embodiment of the vehicle fig4 shows a detail view of the assembly axle with an air oil shock used in the wheel suspension and fig5 shows a detail view of the assembly axle with a coil oil shock used in the wheel suspension independent hydraulic braking is provided from dual real wheel hydraulic disk brakes designed for motor vehicle racing at speeds to 150 mph and operated with a single hand lever these brakes give smooth uniform and powerful braking capability whether with a four or three wheeled embodiment the braking system could be modified for a three wheeled embodiment fig6 is a detail view of the hydraulic rear wheel brake system for the detail of the braking system used with the ski equipped version of the vehicles 10 a or.