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b'Flying Hairdryers; split-apart aircraft; colour-changing jeeps; tanks that turn into helicopters; bouncing ballistic battle balls...\\xa0GI Joe: A Real American Hero was a toyline with a healthy dose of off-the-wall toy concepts. But some of the craziest ideas to be found actually have some basis in reality. Paul, Rob and Steve showcase three concepts that straddle the gap between science fiction and science fact.'