I like this shot, but I think perhaps you might have gone a little too far with the desaturation. There's a uniformity to the red, blue and yellow that, while not unpleasant, still detracts in my mind.
The comment above with respect to the "lack of motion" is possibly due to the fact that the blurred tail lights of the cars are not the shade of red one would expect - they get lost in the composition as a result.
This look more like a recolorized B&W conversion and I think it looses something as a result.