I think it was a design carryover. The original expo console had a removable bag under the armrest I'm pretty sure they just converted it over to a compartment at some point and never bothered to redesign the armrest part also they way the seats and floor pan sit having it all one piece would leave a very tall armrest in the center which would look kinda odd. Seeing as in cars the seats usually sit down in a well where as a truck the seats sit higher. Im sure there was a whole department of guys that thought that up haha.
New DD-2009 Ford Mustang GT/CS candy apple red.
(sold)2003 XLT Tan 3.0L V6 5-speed, Lots of mods.