Thank you for your prompt reply.
I am following your suggestion.
Let's see if I can do it with different brush hardness-opacity or I need to add more than one layer to replicate the effect which is faint in the edges.
I am trying to replicate this picture I found. (SAMPLE)
I used my photo, created the blurry background, made everything BW.
Now I am not sure how to replicate the red effect at the back of the car that creates the speed sensation.
Can you help me? What is the best approach and PS tools...