A bike that can be continuously converted into a tricycle:
[video]http://www.youtube.com/watch?v=_kZRgX6C2ZM[/video]

That`s a quadricycle not a trike

That’s actually very interesting.

Interesting.

Voice over done by Professor Denzil Dexter from the Fast Show, though 😉

It’s interesting, but I’m also a little cynical – I’ve seen quite a few “unrideable” bikes and almost always someone learns to ride them.

In the way it separates steering from leaning it’s quite similar to a trike called the Culty – that took me three days to learn to ride.