What is the most fun you can have on three wheels?

Getting some attention over on autobloggreen is this post on alternative forms of transportation. What you see here are close encounters of the three-wheeled kind. Included are the Lazareth Triazuma, Ural and Harley-Davidson sidecars and the Piaggio MP3. While these vehicles can be considered green due to their lower emissions and higher fuel mileage than cars, the Triazuma would be very exciting to pilot, being very close to the ground with amazing levels of acceleration and grip. Another set of builders has expirimented with the idea as well, making the SUB 3-Wheeler. With supercar acceleration and less fear of falling off, would you ride one to work?

[Source: AutoblogGreen]