I am a newbie with the xB and got a good laugh tonight. I went to the store the other night and got 2 gallon jugs of water with some other stuff. My hands were full so I didn't carry them in then. Today after driving around I went to get the jugs on the back seat floor  and they weren't there. I thought damn, I knew I bought them but I must of forgot them at the store. It was dark under the condo parking and the interior is black. Then I reached way under the front seats and there they were--I couldn't believe the clearance and space under there--more room than the seat in from of you on an airplane!