Keep the original LEGO Racers drawing style (no photo realistic textures)
That may be your goal, but you completely contradict yourself in the second image. That mud is in no way in the original Racers style; it's completely a realistic photo. It honestly looks like the lunar surface, but red (or Mars, if you want to be accurate).
Second, if you are going to remake the textures, don't replace the Racers logo with a different one, just a better version of the original. I just posted one here
Third, add back the Media text above the Media logo to keep with your original goal.
Other than those points and the non-tiling road, studs (which have already been pointed out) and the crowd (what is with that?), it looks really good, including the Minimap.
You say you are using Vector graphics. What program are you using? I may use that for the other tracks I do.
Keep up the good work!