Nearly 300,000 screaming fans have passed through the gates of Mazda Raceway Laguna Seca and over half a billion (yes, that\'s billion with a \"b\") have watched the MotoGP World Championship Race during the last two Red Bull U.S. Grand Prix events.Last year, Nicky Hayden cemented his status in Mazda Raceway Laguna Seca lore by capturing his second consecutive event title and catapulting himself to a World Championship; don\'t expect Valentino Rossi, Dani Pedrosa and Americans Colin Edwards, John Hopkins and Kenny Roberts, Jr. to go quietly the third time around. \n\nDefending Series Champion Ben Spies leads Eric Bostrom, Miguel Duhamel, Mat Mladin and the rest of the AMA Superbike contingent for their first of two visits to Mazda Raceway Laguna Seca. The 600cc race bikes of the AMA Supersport class also will participate during the Red Bull U.S. Grand Prix. Auto, Bull, Cars, Laguna, Mazda, racing, Red, Seca, Sports