Wow Compared to your last sig this is amazing. I'm glad you took my advice with the Smudging Background technique.
However the text again stands out too much, and i dont like the effect on the car.
I suggest putting the render on top of all layers, get a 15 pixel brush, smudge out in a diagonal fashion.
Then with the same brush use the edge of it and push it against the lines you have created using the smudge before. If you don't understand i will be making a tutorial soon.