en_captions: Two dirt bike riders dressed in full motocross gear sit on their motorcycles.   A motocross rider rides his red dirt bike over some small Whoop-De-Dos.  The camera man pans across the motocross course with different riders riding on different parts of the course.  A group of motocross riders perform some jumps at high speed from multiple directions.  A group of motocross riders ride on the motocross course performing tricks and other riding skills.