Hi,
To the best of my recollection the Station Wagon designation came about when the tax situation changed in the UK regarding, cars/utilities/station wagon. Rover figured that when the tax changed(up of course) on the Land Rovers they could add more seats and change the designation from car to station wagon since the station wagon had less tax it made it more desireable a purchase for the fellows in Blighty. As a station wagon it had to have more "deluxe" styling cues.
gene
This 1960 brochure should help with terminology.
-Jeff