anyone using these to tow ?

http://2wtd.com/wtd-index-analyzed_a...dge-pickup.htm

 

Anything that will cut down on air resistance is well worth the money if it will save money on fuel, i drive truck and i know thats why all these companys order trucks with the aero package to cut fuel costs. I know from my experience that if i have my fifth wheel all the way forward i can gain about .5 mpg versus haveing it all the way back. The less space between the truck and the trailer saves fuel. Any way you can get the air to go around what ever you are hauling in a nice smooth fashion is going to save you money!