in any case it s clear a light year is a vast expanse over a year light travels 5 87849981 x 10 12 miles roughly 9 4605284 x 10 12 kilometers written out that s 5878499810000 miles or 9460528400000 kilometers
Earlier racing had used carts. In its final form it is little more than a U-shaped shaft mounted on two wheels with a seat at the end of the U. When it was introduced in harness racing early in the 19th century it weighed about 125 lb (56 kg), but by the 1870s it had been reduced to 46 lb (21 kg).
wheeled vehicle without motor power. paraplegic cart. a two-wheeled cart into which a paraplegic dog can be strapped so that its hindquarters are supported and its front limbs rest normally on the ground and provide a motor system. Used for short periods to give the animal exercise.