Ok, my friend says the Dodge 6.7L diesel has the best fuel economy of all the other diesel trucks. So I go to the Dodge web page, build my truck, and then I chat with some rep asking for the highway/street MPG rating thinking they will give it since they get superior fuel economy. Instead the rep sends backs the disclaimer infomation saying "Oh, Dodge never tested their trucks, and doesn't know" (yeh, right)... But it's the same for ALL the companies. So, anyone care to tell me what they get with the new 6.7L?