Your ambition to create realism has worked. It does look real, and as said- I could believe it to be a photograph (in certain aspects). So props to you on that! But as said before also, there aren't alot of modifications or changes made. New background, wheels and a de-badge. (Might be more, but that's all I can see). They're done really well, I have to admit. But I think you could have done more to this.
Good work though, I love what you did with this

.