*VOLUME* A driver in the Youth Class demolition derby at the Mt. Springs, PA demolition derby lost control of his vehicle after being hit and knocked outside of the arena.The car then went wide open into spectators, including the driver's father who underwent surgery yesterday for his injuries. No one was killed in the incident.The driver of the vehicle said that the throttle cable stuck after being stuck outside of the arena. The Youth Class is open to anyone ages 12-16.Zoomed in half-way through the video.For licensing of this video, please email Licensing@liveleak.com