Semi-correct. 'Junkyard Wars' was the North American name of Scrapheap challenge. (why, who knows, given the nature of the show you could have called it 'discarded bits bodged together' and the same people would have watched it). Excellent show. Robert made a great host.
Junkyard wars later devolved into an Americanized version. Not very good IMNHO. Cathy was still host, along with someone else, but as with most N.A shows, drama was more important than the bodging. After that, another version came out, similar premise but it provided a better equipped yard, two American hosts. And finally there was Mega Challenge, or some such. People built their machines at home and where selected to compete in a timed obstacle course. If I remember right, Robert L. and Cathy where the hosts again.
Alex.