i was like 'thats racist ' then i saw the picture again and i was like 'whats so bad about it?' and then i was like 'wait a second' and looked and saw he was demo, so i was like 'whoa, that can mean a lot'
If you take a screenshot without the car, you will have graphical information of what is behind the car, and if you blur the background, it will look better.
If you just cut the car out and put it in a new layer, when you blur the background there's a slight soft black edge where the blur carried over some of the void. (dunno if that make sense to you.)
I always take a screenshot without cars for the background.
What you can do is use a transparent background. So you have a transparent layer, the layer without the car, and the layer that is just the car. When you blur the layer the car was cut from you can then duplicate that layer a few times and it fills in the transparent area that the blur carries over.