There was a guy, whose name I think was Peter Pelham, who experimented with the flash boiler idea, before emigrating to Australia a couple of dozen year ago. Did you ever come across him or his ideas Peter?
I rather like the idea of an electric Three Wheeler for some strange reason, but I don't think I will be shelling out hard cash, unless the price is considerably less than the current model or I am loaned one for feedback, which is highly unlikely.