Cool
liked: grass, audio, motion, pretty much everything.
there were only a couple of things that caught my eye...
* you need to fix the drivers nose. it totally distracted for me.
* maybe a bit of roll on the cars as they move to overtake.?
* on the close up of the driver just before he shifts gears.. maybe close the eyes a bit and tilt head forward a little... kind of a determined face thing?
* tiny minor point but the tree and grass were in the middle of the screen so I think your composition was a little plain
all the above are just my opinion and that should be taken with a pinch of salt..
really liked it..waiting for more.