[Christ]

The super single tire has been around for quite a few years now... Overnite Transport was testing it back in 2004 or so when I was a Security Guard there in Mechanicsburg, PA, and the drivers reported "easier launches/city driving, longer trip times between refuels (1-2MPG in some cases) and less tire noise"

Don't ask how you can translate what's tire noise from what's "everyday loud ass truck noise", but hey, they said it.

Engine tuning for mass produced trucks has yielded mileage gains according to some people I've talked to as well, things like Injector timing (which can also increase HP output) and tweaking certain air passages for greater/less restricted airflow and colder air flow.

Of course, Wal-Mart won't think about those things, they just want things that are visible... better for PR.