Two wheel drive V-twin This bike was built in 1934, based on a 90 horsepower 1370 cc methanol-burning JAP engine by Bertold Ericsson As you can see it has a very clever two-wheel drive system! pictures from MCM magazine

It seems that a certain Ian Drysdale from Australia (ofcourse..)
went one step further and built a bike with 2 wheel drive and
2-wheel steering! Too bad he didn't stick a big V-twin in there;
woulda made a 2x2x2x2........By the way, his latest project is
a V8 motorcycle that actually looks like a motorcycle, cool stuff!

. Drysdale 2x2x2 homepage