It doesn't roll coal on my dime, but it does haul the mail, and it does make a nicey-nice jet turbine impression cuz without the cat you can really hear the stacked turbos.
Took a ride to my mother's house and back today, 156 mostly highway with the cruise set on 65. Filled up on the way out of town, filled up on the way into town from the same pump. I'll believe it after a few more filllups, but I can be reasonably happy with 19mgp.