<http://schema.org/description>
"For the first half-century of the practical internal combustion engined road vehicle, there was only one form of transmission. This consisted of a friction clutch, operated by the driver via a pedal, and a gearbox in which various ratios could be selected by the driver, using some form of lever acting on the actual selector mechanism."^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.just-auto.com/analysis/developments-in-transmissions-a-global-overview_id87060.aspx>