Lets start off by creating 3 displacement maps.
The first displacement map shall be used for the distortion of the overall image. The second, for the car and creation of light smoke and the third, works as an added detail.
Open the image that we will be working on. For a more precise displace distortion, it is best we examine the size of the image and create a new file base on that. Mine would be 1500 x 916 pixel.
Before & After:
 |  |
