Laugh all you want but those things make super trapshooting vehicles - it's almost as if a trapshooter designed the interior's cargo area.
I owned a dark blue '95 Century wagon (an Estate, no less, with the faux woodgrain transfers all around) for many years. Four flats of shells just fit between the wheelhouses and with the rear seat's back in front of them, they couldn't slide forward or side-to-side. My hard gun cases (Americase & Warwick) and my shooting bag filled the space between them and the liftgate. Then there were the two storage compartments in the interior trim panels behind the wheelhouses - one had a door that locked and they were great for little things. Finally, the footwell for the third seat under the rear floor was great for storing shooting coats and other soft items. A retractable cover kept the whole works out of sight.
The only thing I had to do to it was install a pair of rear air shocks - it hung a little low in the back with all that gear in it. Mine had a 3.1L but still worked great and delivered real high 20s on the highway to and from shoots. I could even fold the second seat down if I bought a case of wads or something at a shoot!
I still kind of miss my "booty wagon," as my kids referred to it. They had no appreciation for cool cars.
Ed