If you want it to be good.. turn up your graphics all the way, aka turn up AF too.
Also, like said above, to shiny.. take the shot with the sky set to overcast, not clear sunny day.. that shadow will ruin the picture and is to much to 'shop out without it looking awkward.
Oh, also.. a shot bigger than 1024x768 would be really nice too..
My laptop is just over a year old, and, well, crap. Actually no, it's okay, just not very good for gaming. You can't compare it to a 'proper' computer. Here's a review btw. I picked it up because it was cheap, even now you'd struggle to find it at the price I paid. I got it for around £150 less than it is on the above site.
I can't really comment on the motion blur because I have no idea how to do that well. But it looks like you blurred the entire image. I would suggest only blurring the areas surrounding the car, not the car itself. Also, since the car is the main part of the image, try using the dodge/burn tool and burn the car a little bit. I normally put it at 100% and give the car one layer. Really, makes the car stand out, imo.
yea here's a list of everything I pretty much did:
shadow under car
shadow behind car
shadow on smoke
shadow at bottom of wall around track
shadow on helmet
shadow of wing on car
reflect mirror (not the best...)
'replaced' trees in background (simply put at least...)
light effects on evostar tyre adverts
blur on wheels