There is always a guy in some shed who tries to invent the wheel again and from that startingpoint also creates a whole new bicycle ! I think it is just nice to see this bicycle and trying to find out how it works.
See for yourself on the BBC news on this link !
Don’t say too soon that this inventor is crazy; even Derk Thijs made a “funbike” years ago, that nobody wanted to buy because it was too “dangerous”. We all know what superb rowingbike he created later on !