That is pretty neat! I'm sure it's only a matter of time before someone works out the LED thing so it is entirely covered and you're not seeing half a car. There was some kind of 'invisibility cloak' technology that New Scientist was bibbling on about a few months ago, I must try and dig that article up because that was something similiar, not LED's but still...
Also, if a Pred was to have a car, surely they'd want this:
I can see them rollin' in that