Four-wheeled automotive vehicle designed for passenger transportation. Most definitions of car say they run primarily on roads, seat one to eight people, have four tires, and mainly transport people rather than goods. Cars came into global use during the 20th century, and developed economies depend on them. The year 1886 is regarded as the birth year of the modern car when German inventor Karl Benz patented his Benz Patent-Motorwagen. Cars became widely available in the early 20th century. One of the first cars that were accessible to the masses was the 1908 Model T, an American car manufactured by the Ford Motor Company. Cars were rapidly adopted in the US, where they replaced animal-drawn carriages and carts, but took much longer to be accepted in Western Europe and other parts of the world. The most common causes of [[cervical spine trauma]] are [[automobile]] accidents, followed by diving into shallow water, firearm injuries, and sports activities ((Blackmore CC, Emerson SS, Mann FA, Koepsell TD. Cervical spine imaging in patients with trauma: determination of fracture risk to optimize use. Radiology. 1999;211(3):759–65.)) ((Barros Filho TEP, Oliveira RP, Barros EK, Von Uhlendorff EF, Iutaka AS, Cristante AF, et al. Ferimento por projétil de arma de fogo na coluna vertebral: estudo epidemiológico [Gunshot wounds of the spine: epidemiological study] Coluna/Columna. 2002;1(2):83–7. Disponível em: http://www.plataformainterativa2.com/coluna/html/revistacoluna/volume1/ferimento_projetil.htm. Acessado em 2012 (9 out).)).