Okay tricky question for me to find the answer to on my own, so... If the rear seats are folded flat into the floor, with the middle and front seats for passengers, how much cargo area is there in cubic feet (or inches) in the Toyota Sienna 2010 and/or 2011? I'm trying to figure out how much space I have to work with and NO I don't have the vehicle readily available to me otherwise I'd take my happy butt out there and find out for myself 