sentences:  In order to ensure short-term commercial viability they started out producing a quadricycle, but in 1900 their "first true automobile", the "Chenard et Walcker Type A" was homologated with the authorities.This had a two-cylinder, engine of their own design which drove the rear wheels through a four-speed gearbox and an unusual transmission system.From the gearbox there were two drive shafts, one to each rear hub, with the hubs driven by gear teeth cut on the inside.