Smart Trucking?

We as O/O must tightened our belts again as the prices go up. But many it seems still pride themselves in being a Super Trucker. They idle their trucks, even in the mildest of weather; they speed by with no regard to speed limits, weather conditions, construction, road hazards, or the wasting of fuel. We all know company drivers don't generally care about anything but how many miles they run in a week. But as O/O, everything matters.
With our Cummins, we can average 7+ mpg; But, its only because we have invested in our truck to perform better. The biggest investment that most are scared of is the (ThermKing) APU. But, I see guys who can't even invest in batteries or air governors. (better to have that extra crome?) I don't know about the rest of you, But when we fiqure mileage after fueling and we see 7.5-8 mpg, We know we made the right choices. If you can invest in insulation for your home, why not try putting some in your truck?? And why not pop in the screens and let your truck (and the rest of us) sleep peacefully??