Interesting question. In general we can't go faster than the speed of light, but based on your assumption the car has X speed and the light coming out is X+1, so in theory this breaks the general law. I hope a clever physicist explains this in details.
Discussion
The clever physicist will probably commit suicide in a cell that is under suicide watch, but rest assured, we will do everything to ensure their life's work remains obscured from the public.
Hey, look at this other thing thats happening ....