I like all of those except the first on in Vale's second post. I don't know why, that one doesn't appeal to me. But the first one you posted is very very nice
I intended to colour this, but making this was incredibly boring, so I have given up with it. (it is all my own work, no filters, just many, many lines...1212 lines to be exact).
NeonMuffler, I like that pic alot. Though make sure not to leave sharp details (like the rear spoiler) behind the blurred car.
I assume you selected and copied the car to a new layer and blurred that? You can try using the smudge tool and smudging any sharp details on the original layer behind the blurred layer.
That's great stuff man! I see you've improved alot. The thing I like most about that picture is that it looks really original, the action particularly.