not bad. You kind of have some weird, in between shots here. By that I mean, normally, you would either do a panning shot where you keep the moving car in focus and blur the background, or keep the background in focus, and see the light streaks from the cars. You are kind of on the fence between these, especially with 1 and 2 posted first. Both are kind of blurry. In the last one you just posted, it's kind of weird to see such a short motion blur on the lights... maybe try a longer shutter speed? What kind of camera are you using, if you don't mind me asking?