It was in 1818 that he developed a very strong interest for this contraption, cousin of the dandy horse( ancestor of the bicycle without pedals and transmission) and built himself a model. Nicéphore made quite a sensation running on his velocipede on the local country roads. But he could not resist improving it by different means : the adjustable saddle among them .
This velocipede with the saddle is exhibited at the Niépce Museum. In a letter to his brother, Nicephore thought of motorizing his machine, thus imagining the moped .