Young Frennchman Florian Latorre wins USF2000 finale and title at Sonoma Raceway.The battle for the 2014 Cooper Tires USF2000 Championship Powered by Mazda fittingly came down to Saturday's USF2000 Grand Prix of Sonoma finale with the three title contenders running one-two-three at the front of the 21-car field. Friday's winner...