I can see straight away what your problem is with that last shot.
It's because you are in fact a rubbish photographer. Give the camera to someone else and take up knitting.
The 600mm f4 you have will find a better home with a master tog so best send it over to me.
For the love of god, please clean your sensor...
Now, the 5th shot with car number 3, nice pic, but in case you hadn't noticed, you've chopped off the back of the car
As for the special one that you posted just for me...well, I can see the potential there.... You have demonstrated that you can frame a shot well, but I think you may have overdone it a tad with the motion blur.