Basic Biodiesel question

I am brand new to Biodiesel so please forgive the basic question. I have seen numerous non computer diesels converted via internet groups and forums.

One thing I haven't seen and I think it would be an awesome conversion if it's possible.

Royal Enfield has a diesel motorcycle. Small, underpowered but apparently reliable. Has anyone seen one of these converted? Imagine how far you could go on just a couple of tanks!

there's not much of a conversion involved for bio-diesel. might need new fuel lines and to replace a fuel filter a little earlier than otherwise, but that's usually about it.