Yuba County Sheriff s have confirmed that two people were killed after a crash at Marysville s Raceway Park early Saturday evening. The two, a 68-year-old man and a 14-year-old boy, were walking in the pits as a part of a driver s pit crew when the winged sprint car crashed into them. At the time, the cars were only doing their warm-up laps. Witnesses say that the car was traveling about 90 mph when it crashed into the pit.