Engine in wheel motorcycle from the 1930s. Pretty Mad Scientist like.

[Billy Golightly]

http://www.schouwer-online.de/technik/killinger_e.htm

Interesting contraption. The body lines are pretty freakin sweet too.

[Dirtcrasher]

WOW!, that is some pretty nice ingenuity there!!

[atc500x]

I like it.Never use it on sand,Imagine in a curve on road with sand and you open wide throttle on this 600cc triple 2 strokes....
I have a Solex moped,50cc with front wheel drive ,only 50cc and it's enought in sand.....

[hang&rattle]

Genuis. What a beautiful machine. Those gentlemen were way too far ahead on their thinking, back in them days it was such an engineering marvel people were probably sayin', "Next thing you know they'll build a motorcycle with three wheel's."- I own three wheelers, so I'll be as arrogant as I want! Ha Ha.

[Grizzlypeg]

That is excellent.