Try turning down the Shutter speed and lower the F figure, it increases the realism of the images and you really get a sense of speed. Compare these, one is my normal way and the second is after taking some advice on photo settings, they are not the same shot but they are effectively the same. Notice the difference? The first one is maxed out on shutter and F figure settings while the second one is the lowest, also be sure to set the Panning Mode to 3.
I like a lot the last one in the "Monza spirit" set, nice atmosphere in this one. Nice work on the megane set, I especially like the third but the car is lightly cutted on the down part...
Nice bokeh on your last preview.