Nice one
Is it ISI or EGT? I guess I should know the difference but I don't drive these cars very often(I guess egt)
I think with that last shot you should motion blur the heat haze along with everything else... doesn't look right that way
(also, with your earlier shot, takes away from it a bit when you blur the whole bottom part of the image to try and fake DOF - you end up with the front of the car blurred but the driver [which is at least as close, so would blur] is hardly blurry at all. Makes for a more time consuming blur process doing it by object distance, but would make it look more real)
Those are great!Some quick edits