On Sunday 11th June 2006 Scrapheap Challenge took the National Motor museum by storm when it staged the world's first sofa speedway.
Sixteen teams drove their own home-built motorized furniture. Fishtank, dinner tables, beds, kitchens, bathrooms and even pool tables raced frantically around a course plagued with hazards including chicaines, width restrictors and even a skidpan.
A fantastic day out was had by all and if you want to see what happened look out for the programme at the end of this year.
http://www.channel4.com/4car/ontv/scrapheap/index.html
Unfortunately, I can't see any torrents on tvtorrents, isohunt.com or thepiratebay that match the description. Maybe someone IQ'd it?