I like to camp out in my jeep, I made a sleeping platform for that exact reason. The lack of a release button from inside the car is frustrating! SO, I made one. It was super easy, just cut some wires and ran a toggle switch to the inside of the hatch.
I thought about running one all the way to the driver area but I don't need it, I just want it for when im sleeping back there.
UPDATE: I replaced the switch with a sleek push button