I have seen drawings of similar things but never a working model.
I, too, wonder if it was actually rideable.
EDIT - My opinion is that it is not rideable. The seat is in the back. Balancing would be incredibly hard even with the weight of the engine inside the wheel.
all i have is this text my friend sent...apparently it sold for $36,000US
Now...get this...before the auction started the auctioneer told everyone that the story about the MV owner's son making the bike and his untimely death were all a fabrication. The thing was made up by someone who is well known for restorations of old bikes...he had a few Parilla's up for sale here. It was made up as a unique piece of motorcycle art...doesn't run...never has. thats All I have 250CC MZ unicycle reportedly designed and built by the MV founder's son...who crashed and died on it while waving to a hot female Italian pedestrian as he negotiated a corner. Details of the sad story were printed on the picture framed at the base of the bike.
Sadly, no picture of hot female Italian pedestrian.
-- Into the blue
\"now listen up, you primitive screwheads...see this?...this is my -boom- stick!\" \"give him a sedagive!!??\" \"ham and jam! ham and jam!\" ------------------------------------------------------------------------ Into the blue's Profile: http://www.unicyclist.com/profile/12084 View this thread: http://www.unicyclist.com/thread/59019