Televison: Battlestar Galactica 1980.

"...The Model Shop was on such a tight schedule, they were designing, building, and painting the three motorcycles at the same time for the (mercifully) short-run television show "Galactica 1980" Patterns for some parts were being carved in foam while other finished parts were being painted. The base motorcycle was a Yamaha MX 175.

Via: Universalhartland

..We built two full functioning motorcycles and one dummy which was a working motorcycle, but without the moving wings and other added mechanicals. Unfortunately, we were not finished with the dummy when they needed a half motorcycle to hang on a helicopter, so they chopped a functional motorcycle in half -production waits for no one. .."

In the future there will be silly helmets....