Image #3 is your weakest image of the collection. Very little motion to convey speed, cluttered background, parking lines make this feel like a lower tier of event, and the colors are very muted.
By contrast, #2 is your strongest. Plenty of motion and sense of speed, good contrast and color saturation, the subject of the photo is clear and the smoke helps draw your attention to the car and, more importantly, the sponsor. #5 is probably your second strongest image because of how well the fencing from the straight between turn 9 and turn 10 frames the car and there's a quick peak of the race curbing in turn 10.