| By Theodore Liasi London (espnstar.com) - Formula One stars Felipe Massa and Rubens Barrichello were given a stark lesson in their own back yard after losing to a 15-year-old driver in the annual Granja Viana 500 Mile kart endurance race in Brazil over the weekend.
Teenager Otavio Bonder and his teammates won the 10th edition on Sunday at Katrodromo International Granja Viana in Cotia, near Sao Paulo.
The F1 and Indy Racing League stars were shown a clean pair of heels as Bonder’s team took the chequered flag more than two laps ahead of Barrichello's all-star cast, which included Tony Kanaan and Dan Wheldon, after more than 10 hours of racing.
Pole-sitter Felipe Massa failed to cross the finish line. He lost first position right after the Le Mans-style start and was running second at the beginning of the second hour, when he was unable to avoid a shunt against another kart that had just spun in front of him. A broken axle meant around 30 laps for repairs.
Massa managed to rejoin the race until a third broken engine forced him out of the race. “There was nothing I could do. When I realized, the guy just a few meters ahead”, the Ferrari ace explained. “It was a shame, because our pace was quite good and we were capable of finishing in the top three positions.”
Barrichello, however, was delighted to have finished second. “We've got to celebrate, because our kart was not as quick as the ones driven by the drivers that arrived in front of us and even some that we happened to get passed. We faced problems with a poor engine all the time”, insisted the former Ferrari driver. | 
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