What I find puzzling Jim is that you would refer people to a site with specious numbers and confusing inferences. Any idiot can lie with statistics, but when you attempt to lie with statistics and then cloak your methodology in a confusing and disorganized website that forces people to click on 5 or 6 links to actually verify the numbers that you are using, you appear dishonest. I know you are passionate about pavement and roads and cars and parking lots, but if you are going to cite numbers and then reference back to your confusing website, nobody will go there more than once. Its just not a compelling reference.