I know I sound a bit down on you but you can accomplish this type of effect with what you have. However, it requires a lot of work!
In order to force the BG to work, I had to make many changes! (reminder: I did this very fast to demonstrate.....it needs a lot more work!)
I copied the right side, reversed it, and moved it to the left side. I used a layer mask and the
Brush Tool to blend the two sides leaving the car in the middle.
I used the
Clone Tool and the transform function (warp and resizing) to change the left side so it did not match the symmetry of the right. (quickly, so it can be much better) I also cloned out some elements on the road.
I removed the original sky using a
Channel selection process, and replaced it with a much brighter one.
Since I did not have the original car and I'm working on your posted image, I had to use the
Pen Tool to cut out the car so I could place layers beneath it and the background. I also cut out the back window to which I filled with white and added a bright
Outer Glow using a layer style.
I used a gradient set to foreground to transparent and the FG color white, from the bottom up. I then used a layer mask and the
Brush Tool to remove the shaded area in front of the car.
I also added the drop shadow and transformed it using the "perspective" function in free transform. I then added a layer mask to the shadow layer and used the
Gradient Tool to fade it.
I used a Lens Flare brush to add the lens flare.
I probably did several other things I'm forgetting to mention.
These types of composites are difficult and time consuming. They require a fairly good working knowledge of Ps techniques. If you want to learn them, start slow and easy one technique at a time.