Saw this beauty on an auction site. I thought the listing was for a vintage bike, but it appears to be powered by a Chinese 66cc motor. Kinda pricey too...
http://www.classicdriver.com/en/bike/singer-motors-limited/board-track/1953/208215
Russ
http://www.classicdriver.com/en/bike/singer-motors-limited/board-track/1953/208215
Russ