Forgotten what the race is called but can someone give the reason for the man on a motorbike? If its to give the riders a flying start it would be more exiting for the riders to be jostling and finding their own speed.
The keirin. The riders all jostle for positions and try to get to the place they prefer at the start, and when the man who looks like a vicar on a scooter drives off the track, it's basically a sprint. I love it :)