This has nothing do do with dentistry but it just looks soooo cool and interesting I had to put it here;
A young inventor has created a motorbike with a twist – it uses two wheels but they are positioned right next to each other, giving it the illusion of being a powered unicycle that uses gyroscopic technology – like the infamous Segway commuter device – to stay upright.
The bizarre-looking contraption has only one switch – on or off – and is controlled entirely by body movement. The rider leans forwards to accelerate to speeds of 25mph and back to slow down. It has two wheels side-by-side and has been turning heads wherever it has been ridden.