First thing that came to mind when I saw that picture was Bombardier's Can-Am Spyder, which has a similar twin front wheel configuration. Alas, the Spyder tops out at 30+ miles per gallon, or about 8 liters per 100 km.



http://spyder.brp.com/en-US/

Must be a very strange sensation to ride one of these. They supposedly lean the way a motorcycle does, but there's got to be a learning curve.

Here's a link to a North Bay Sport Riders thread by a woman to bought one to help her through rehabilitation after an extremely severe accident in Idaho.

cheers