Best fuel economy speed

I love the fuel "economy" questions. You are driving an apartment. You won't get good mileage no matter what speed you drive. The difference between 45 and 70 is about 1-2 mg. Which translates into almost nothing unless you are driving a LOT of miles. And all bets are off if you drive in hilly terrain, stop and go traffic, wind, loaded heavy, genset running, how many stops you make etc.. I stopped monitoring mileage years ago. I didn't buy a MH as en economical travelling vehicle. I bought it for convenience. I still pay less than airfare and hotels so regardless of mileage travel budget is friendlier. You also will notice almost no difference in MPG towing a car. Your car is in the slipstream and rolling along with almost no resistance. And your car gets unlimited MPG while towing. I figure if my budget is so tight that mileage is a constraint on my MH usage, I have no business owning one. Ignorance is bliss. Every now and then someone at the pumps asks me what kind of mileage I get, I tell them, pretty good for an apartment. For me, it's all about smiles per gallon, not miles per gallon.