That's wrong, BadCivil. The saved coords were meant to be used for mIRC scripts. In order to add a car at a desired place, you must take the coordinates: x, y, z from the vc-mp_saved_coords.txt and then place them in this order:
AddStaticVehicle( model, x, y, z, angle, colour1, colour2 );
Note: -1 at colour1 and colour2 is not a mistake, it means the script shall choose a random color from the carcols.dat.