Your pans are uninspired, the crops awkward. There's no sense of scale or drama, due to the distance and composition. Close crops of cars, while technically demanding, aren't visually interesting. Why post your bog standard news reel pans when you could be looking for the close passes, the bumps, the jumps, the offs. What about the background, what about the people? I think you might have benefited from some flexibility in focal length. Rent a 70-200 next time, maybe a 1.4x as well for day time.
Surely you have some more interesting photos to post?
>>3613115This one's interesting and it's not even Sugar's. It would be nice if it had a car braking, for the red hot rotors that are so prominent in night time racing.
>>3613126Sebring is a 12h or 1000 mile race. It is dark and flat, but the race is still challenging, and they say the partying is legendary...
>>3608374It's a Mazda/AER design. Considering the kind of boost they're going to have to run, it's probably only a Mazda block at best.