Peugeot 1904 2½ HP 300 cc aiv single frame # 11790 engine # 9294 Although a prototype De Dion-engined Peugeot bicycle was displayed at the Paris Salon in 1898, the first motorized cycles to leave the factory were actually tricycles with De Dion & Bouton engines. The popularity of the tricycle was unchallenged at first, but by 1902 the..