Your right there. Most modern MPFI V8's get similar gas mileage to these VX's.
After driving 3 of them, one common thread I see is the design of the TOD system. There seems to be more drag that other 4WD/AWD vehicles. Also, a bit more drivetrain vibration too. Besides the 4k pound weight, add'l drag in these drivetrains might be contributing to lower mpg.
I did find they are little snappier than my first impression, but they don't have the power you'd expect from a vehicle with their mpg.
Also, thanks for the offer. To drive that far, I'd be looking for my favorite color, which is BLACK! (I'm on a roll -- having owned all black cars since 1989).