You can also utilize the roof cargo rails and install a trailer hitch (which we have done) for added cargo space. (autolist.com)
It should also be noted that the rear seats can either be flipped up to access a storage shelf or flipped down to provide added cargo space. (cheersandgears.com)
The rear seats can also be manipulated by a ratio of 40:20:40 to allow added cargo space without eliminating the entire seating area. (thesupercars.org)