In 1996 Exide acquired the French/Italian battery corporation CEAC, Clichy.
Since leaving DaimlerChrysler, Castaing has served as a member of the board of directors for multiple manufacturing and automobile companies, including Exide, the battery company, Durakon Industries, NextEnergy, Reynard Motorsport, and Valeo.
The following year he joined with fellow American and Cradley teammate Billy Hamill to form Team Exide.
The cream was originally developed for use in their Exide works at Clifton Junction near Manchester.