Audi R15 to require only minor modifications

Audi will have to make only minor modifications to its R15 TDI for the controversial turbodiesel-powered prototype to be eligible for next year's 24 Hours of Le Mans.Rule guidelines issued this week for 2010 by the Automobile Club de l'Ouest--the Le Mans Organizer--suggest a compromise designed to reduce the effectiveness of the Audi's radical front end without forcing the German manufacturer to