A1 Grand Prix A1 Grand Prix A1 Grand Prix (A1GP) was a 'single make' open wheel auto racing series that ran from 2005 until 2009. It was unique in its field in that competitors solely represented their nation as opposed to themselves or a team, the usual format in most formula racing series. As such, it was often promoted as the "World Cup of Motorsport". The series was ratified by the Fédération Internationale de l'Automobile (FIA) and races were held in the traditional Formula One off-season, the northern hemisphere winter. The nation-based A1GP concept was founded by Sheikh Maktoum Hasher Maktoum Al Maktoum
Auto racing championships. The Sports Car Club of America's SPEED World Challenge Touring Car and GT championships are dominant in North America. America's historic Trans-Am Series is undergoing a period of transition, but is still the longest-running road racing series in the U.S. The National Auto Sport Association also provides a venue for amateurs to compete in home-built factory-derived vehicles on various local circuits. In sports car racing, production-derived versions of sports cars, also known as grand tourers (GTs), and purpose-built sports prototype cars compete within their respective classes on closed circuits. The premier championship series of sports car racing is the