Went along to the museum of science and industry in manchester the other day to check out Gunther Von Hagens' Body Worlds (on a side note, if you ever get a chance, go see it. Extremely fascinating). On my way out I had a quick look in the air and space hall and came across these. I'm not really into speedway (the racing or the bikes) but in the metal, they were pretty f***ing trick and looked as though you could pick 'em up in one hand. Think they were both Rotrax framed bikes from the mid '70s.