High Quality Content by WIKIPEDIA articles! The Sequel is a purpose-built hydrogen fuel cell-powered concept car and sport utility vehicle from General Motors, employing the latest generation of HydroGen3 technology developed by Opel. The Sequel uses a "skateboard chassis" in which all relevant drivetrain and 700 bar hydrogen storage components are integrated. In addition a sophisticated drive-by-wire system is implemented. It has a range of greater than 300 miles, demonstrated on public roads between Rochester and New York City in March 2007. Its only emission is water.