<TABLE class=nested_invisible_table border=0 cellSpacing=0 cellPadding=0 width="100%" height="100%"><TBODY><TR><TD height="100%" vAlign=top colSpan=4><SPAN id=post_message_1270686615>I'm interested in winterizing my minivan for -20c to sleep in. I have taken out all but the front 2 seats and am...