Stan, I don't have a problem at whatever speed you want to drive. If you want to get 5.0 mpg vs. maybe 7.0.... no skin off my nose. The small problem is trying to maneuver a 40,000 lb.+ vehicle in an emergency situation, that's all, nothing more, nothing less.
Keep in mind, you were the one that mentioned the fuel mileage and realizing that you had an 'economy' mode on the transmission. If it was NOT such an issue, why mention it. We were just following your lead and then you bark at us for making fuel conservation suggestions. Either you want the bread buttered or not. :R
MM.