nice pics though your levels are off, little help that can fix it in photoshop:
Image>Adjustments>Levels (not auto levels)
on the bottom right you will see 3 eye droppers (from left to right) Black, Gray, White. Click on the black and sample the blackest point in the picture (in example below I chose the mustangs tire) now you need the gray point (i chose the gray trim on the trailer) then the whitest point (I used the rx7 paint).
The difference?
Original:
Adjusted: