I've got a Scion xB. I can stuff one bike in the back if I fold the seats down, so only two people can ride. I just bought a Saris Bones 2 so I could carry 2 bikes and 5 people at the same time. Or 3 bikes and 2 people, I suppose, but who would ride the third bike?

It's sturdy and easy to put on and take off. It does kind of obscure the rear license plate, so I'm worried I'll get a ticket at some point.