http://www.youtube.com/watch?feature=player_embedded&v=Bch5B23_pu0

Have heard about this type of technology before, it's one of those amazing, I can't believe no one thought of it before technologies.

I think its one of those bits of technology that has been thought of loads before but only now are we getting to the position with affordable materials and computer control systems that it could become reality... Less to go wrong with a solid camshaft though