Thanks guys.
This MKZ has turned out to be the best cruising Lincoln we've ever owned. We took a trip in it to San Francisco and back (from Fort Worth). I drove it all and there was no "driver butt fatigue." The reason has got to be the tushy coolers (to steal Trixie's wording.)
We've also had it at 95+ MPH and the car hugged the road like a race car. For a V6 this car has impressive get up and go!
This is the wife's car. When she takes it to work, I always remind her the car color is "Arrest me Red." She states she paces traffic at 85....