Do you know anything about the camera-position, lens f-stop, and so forth that were used to take the original photograph? Do you know the size of the lot?
If not, can you reasonably estimate it?
Then: model the flat parking-lot, with the cars positioned in its square grid. Next, position a digital camera in the same physical position and with the same f-stop et al that was used to make the plate. The resulting render ought to match-up acceptably well to the plate.
It might be helpful to roughly lay-out the parking lot paint-lines on a plane that represents the physical lot. In fact, then you can (almost instantaneously) photograph just that, and use it to match-up with the lines on the plane. This ought to be a useful time-saver as you’re determining the camera position etc. if you do not already know them.
(This is also an important reminder of the reason for bringing a log-book with you, and surveying equipment if necessary, when shooting a plate. You need definite knowledge of all of the parameters used when making the shot … even light-meter readings, time of day, sun angle.)