Well, SCoates, I was going to say that the word "car" came from es-CAR-go, because the early ones ran at a snail's pace.
But, factual stuff is what you're looking for so here tis:
car - 1301, "wheeled vehicle," from Norm.-Fr. carre, from L. carrum, carrus (pl. carra), orig. "two-wheeled Celtic war chariot," from Gaul. karros, from PIE *krsos, from base *kers- "to run." Extension to "automobile" is 1896. Car-sick first recorded 1908, on model of sea sick. U.S. carport is from 1939. Car bomb first 1972, in reference to Northern Ireland. Car pool is 1942 (n.), 1962 (v.).
Boring, ain't it.