I wonder who conceived that, Mussolini's evil twin brother?!
If you fire that thing the scooter would go backwards.
Maybe there's a tripod on the other side...
But I'd love to go back in time to that exhibition, there are brand new bikes from Jawa - CZ, Messerscmidt, Viktoria, Pannonia and some makers I've never heard of, like Liberia. Imagine you could be there and talk to the executives about the benefits of four-strokes and double overhead cams...