The “A-bone” Cox .049 tether car was made by Doug Parker, of Vermont, in 2015. Measuring 7-3/4″-long and 3-1/8″-wide, the racer is machined from aluminum, brass, and steel bar stock and hand polished to a mirror finish. It is powered with a Cox .049 engine that has been modified with the addition of a white Sand Blaster back plate, and a K&K fine thread needle valve. The drive shaft is supported by a bearing and drives a 2:1 geared axle also supported by bearings. The front wheels have their own bearings. The fuel tank holds about 1/3 ounce of fuel and is filled through the vented radiator cap. It weighs 14.2 ounces.