Enclosed Car Trailer Buying Help!

WOW... I love the Ram trucks but reading these MPG I am glad I got my GMC. 12.5mpg towing my 20' flat nose at 65-70.. Unloaded it will get a true 22mpg running 70-75. I know the Ram is faster and looks better but my wallet is a little bit happier.. And yes I know my car is a good bit lighter than 995 of yalls.