I saw on TV a while ago a program that explored some of the possible ways in which cars could be powered in the future. One of these was particularly interesting. It involved using a special powerful light that is surrounded by solar panels. The light given off is used by the panels to produce electricity to make the car run but some of the power produced is used to make the light work and the cycle continues. I wondered is anyone else has heard of this invention and knows what has happened to it because to me it sounds like a very promising invention and I am surprised that I have not heared more about it since.