it was pretty easy, it started with the road layer. All that was was a brown and black color done up with the cloud filter, sprayed strokes and paint daubs. I set that layer up with a vector mask filled with black. I then used the pen tool to draw up the main shape and crop lines, stroked the path with small brush that had scattering and spacing settings. Then I added an inner shadow to the layer and altered it's blend mode and opacity. That was it...