Today on our 2011 Toyota Sienna we're going to be test fitting our Thule Sonic XXL rooftop cargo box, part number TH636S. This box offers 22 cubic feet of space and it comes in both and silver. Today we're featuring silver. First what I'll do is grab an extra set of hands and we'll go ahead and load the box onto the crossbars. The Sienna has a factory roof rack on it. We'll first set it up here… see more >