thumb|right|Renault Dauphine After the success of the 4CV, Lefacheux continued to defy the postwar French Ministry of Industrial Production, which had wanted to convert Renault solely to truck manufacture, by directing the development of its successor. He oversaw the prototyping of the Dauphine (until his death), enlisting the help of artist Paule Marrot in pioneering the company's textile and color division.
thumb|right|Renault Dauphine After the success of the 4CV Lefacheux continued to defy the postwar French Ministry of Industrial Production which had wanted to convert Renault solely to truck manufacture by directing the development of its successor He oversaw the prototyping of the Dauphine (until his death) enlisting the help of artist Paule Marrot in pioneering the company's textile and color division