I have been researching vans for a couple of years now and finally think I will settle on an e350 - mainly for power and towing reasons. The interior is a bit on the small side - especially the width and the height - I had an idea that is kind of "off the beaten path" so I thought I would throw it out to you folks :ylsmoke: I want to well insulate the vehicle using as little interior space as possible. What about the idea of putting 1" of a kind of rigid insulation on the OUTSIDE of the van, and then glassing it over? I have seen some 1" insulation that provide more than R10. I think...if done right, it might be really cool looking and could make the vehicle more aerodynamic. I could also incorporate tabs in the rear of the vehicle while putting on the glass, and possibly some other fuel saving options. Any ideas?