The fourth of Yamaha's environmentally-friendly two-wheelers to be shown at the 40th Tokyo Motor Show is imaginatively, and simply, named BOBBY. Odd name choice aside, the idea of a fold-away little bike makes some sense, and actually has been done before, including with this electric machine from Yamaha themselves. If you're into styling which falls squarely into the "box it came in" philosophy, perhaps this diminutive machine will fit right into your Scion XB.

An interesting feature that this concept vehicle supports is the capability of starting the bike up with certain cellular phones. It's push-button starting taken to a whole new level!

So, what does this concept machine bring to the table that the EC-02 doesn't? Hmmm... I guess that depends on your priorities. Would you prefer the EC-02's iPod dock, or would you rather wow your friends by starting your BOBBY with a cell phone? We'll call it a draw!

Related:

• Tokyo 2007 Preview: Yamaha on two-wheels - FC-Dii - Part 3 of 6
• Tokyo 2007 Preview: Yamaha on two-wheels - Tesseract - Part 2 of 6
  
• Tokyo 2007 Preview: Yamaha on two-wheels - LUXAIR - Part 1 of 6
  

[Source: Yamaha Motors]

Carrying on Yamaha's onslaught of the 2007 Tokyo Motor Show and their slew of environmentally-friendly cycle concepts, we now introduce you to the FC-Dii. Like the LUXAIR that we showed you previously, the FC-Dii appears to be based on a model originally shown in 2005 called the FC-me. Like that machine, the FC-Dii gets its power from a fuel cell which uses Yamaha's methanol-water solution. The fuel cell creates electricity which continuously charges the on-board lithium ion battery pack. That battery pack is also removable for charging and replacement purposes. According to Yamaha, their fuel cell "features the highest level of power density in the 1kW class... which achieves a top-level performance of 30% system efficiency for a DMFC (Direct Methanol Fuel Cell) system."

The bike itself appears quite small, which makes sense considering that Yamaha would want to keep the machine as light as possible. Nothing really appears to be innovative here besides the fuel cell system, and a good deal of the components appear to carry over from the FC-me. AS soon as we are able to get better pictures, we'll be sure to update this post.

Related:

• Tokyo 2007 Preview: Yamaha on two-wheels - Tesseract - Part 2 of 6
  
• Tokyo 2007 Preview: Yamaha on two-wheels - LUXAIR - Part 1 of 6
  

[Source: Yamaha Motors]

This mind and law-bending concept from Yamaha would likely cause the Piaggio MP3 to run away and hide in a corner somewhere. The Yamaha Tesseract does the MP3 one-better by adding a fourth wheel to the rear of the cycle, making it difficult to actually classify this concept vehicle. We'll go with motorcycle for now, but reserve the right to change our minds whenever the heck we feel like it. This vehicle inspires us to do so.

The Tesseract has the ability to lean into turns like both the MP3 scooter and a standard motorcycle, and we are betting that it would be absolutely awesome to ride! The cycle is a hybrid, featuring both a V-Twin gas engine and an electric motor. Yamaha calls the front suspension a "dual-scythe" which sounds a little painful. Like the MP3, the machine can be locked upright when coming to a stop and when parking.

Styling is sharp-edged, and the front end takes on a bit of a praying mantis look with the lights and linkages for the dual-scythe suspension system. Supposedly only about as wide as a regular motorcycle, we wish that regulations did not prohibit a machine like this from being street-legal in the States. Oh well, it's just a concept anyway... but we can still dream, can't we?

Related:

• Tokyo 2007 Preview: Yamaha on two-wheels - LUXAIR - Part 1 of 6

[Source: Yamaha Motors]