ok so after owning the new 2500HD for a day, i noticed a few things. 1. it's very quiet in the cab 2. it's the most luxurious vehicle i've ever been in, period. 3. the ride quality is significantly better than a 1/2 ton. now down to the stuff that matters for work. it tows my landscape trailer like it's not there, no jarring of the suspension going over bumps. the fuel millage sucks 12.8-14.0 MPG WTF? is this the consequence of owning a huge V8? is that normal? will it do better on a long highway trip?