The Parisian firm Compagnie Général des Cycles makers of Rochet motor tricycles and quadricycles added 'Autos' to its title when it acquired the rights to a car designed by Edouard Rossel of Lille. It looked remarkably like a Peugeot (who also had a factory in Lille) but was fitted with a rear-mounted vertical two-cylinder engine, said to be of Rossel's design. In the middle of 1900 the car became more up to date when the engine was moved to the front and a wrap-round radiator was used. The following year a voiturette marketed as the Rochet-Petit was introduced and in appearance it mimicked the De Dion-Bouton vis-à-vis although an Aster engine and wheel steering was used.
For 1903 a conventional single-cylinder light car was available along with a 12hp four-cylinder chain driven model, both with front-mounted Aster engines. The future looked rosy, two British companies held Rochet agencies, and so the reason for the sudden cessation of car making in 1904 is something of a puzzle.