I've gotten 2 large camping backpacks, a tent, a large cooler, 2 bedrolls, 2 sleeping bags (one of which was an old WWII army sleeping bag that was approximately the size of an aircraft carrier), and a bunch of miscellaneous stuff in the back and the seats could still be pushed all the way back. A friend of mine got a palm tree in his (he dropped it down through the sunroof and drove around. I'd love to have seen the expressions on people's faces at the site of a tiny little car driving around with an 8 foot tree sticking out the roof ;)

Oh, and they outdo porsches in the twisties ;)