War makes humans do strange things (I mean, besides kill each other for resources or for having the wrong deity). Some time in the late 1930's some Germans were sitting in a room and one of them said something akin to "what if we combined a motorcycle and a tank?" The whole idea might have died right there, but war was eminent, so the world ended up with the Kleines Kettenkraftrad HK 101. Flash forward about 80 years and builder redfern1950s2 said something akin to "what if I combined bricks to build a combination of a motorcycle and a tank?" And I for one am happy that he did.