DOVER, Del. - DuPont and Hendrick Motorsports extended DuPont's longstanding sponsorship of the #24 Chevrolet Monte Carlo in the NASCAR Nextel Cup Series. The new pact builds on an association launched 13 years ago with a flashy "rainbow" paint scheme and a 21-year-old rookie driver named Jeff Gordon. Under the new contract, DuPont continues as the primary sponsor for three years, through the 2008 racing season, with the option to extend for an additional two years.