Scrapheap Challenge - Season 4 - Eps 4: Street Cleaner
The teams have to build a four-man machine to clean up litter. Different kinds of rubbish (such as old cans, plastic bottles, newspapers, cardboard, old clothes and bin liners) will be spread over an area 50x50m and the teams will have half an hour to pick up as much as they can. When time is called, the winning team will be the one with the heaviest load of litter.
About Scrapheap Challenge

Title: Scrapheap Challenge
First Air Date: 1998-04-12
Last Air Date: 2010-06-27
Status: Ended
Rating: 6.1/10 (from 19 votes)
Language: EN
Seasons: 13
Total Episodes: 165
Network: Channel 4
Genres: Reality, Action & Adventure
Production Companies: Unknown
Synopsis
Scrapheap Challenge is an engineering game show produced by RDF Media and broadcast on Channel 4 in the United Kingdom. In the show, teams of contestants had 10 hours in which to build a working machine that could do a specific task, using materials available in a scrapheap. The format was exported to the United States, where it was known as Junkyard Wars. The US show was also produced by RDF Media, and was originally shown on The Learning Channel. Repeats have aired on another Discovery network, the Science Channel.
Cast

Robert Llewellyn

Lisa Rogers

Dick Strawbridge