Vehicle photograph background replacement etc

Replacing the background on external vehicle photographs and blanking out the glass on internal vehicle images. Please see attached pdf file showing before and after examples. A layered Photoshop file would be suppled.

As an estimate we would require per vehicle
8 external images with countryside background and text overlay
8 internal images with glass blank

24 hour turnaround required. Vehicles will be supplied as they come into stock
695 images per month estimate at this time
More work will become available in time
Work will be ongoing
We are prepared to pay a total fee of 125 british pounds per month for an estimated 695 images per month

Photoshop user required