Laurie Bond was a prolific designer of vehicles in post W2 Britain. Apart from the 3 wheeled Villiers engined cars he was responsible for (guilty of?), he came up with some 2 wheelers. Of possible interest is the Minibyk, a machine composed largely of folded or rolled sheet aluminium. Ugly and it didn't sell, but the basis for economic production was there. Some of you might like to take some of the ideas away and use them:
http://motorbike-search-engine.co.uk...d-minibyke.jpg
http://motorbike-search-engine.co.uk...d-minibyke.jpg