Haven't posted much since I joined but I've become obsessed with mileage

So far, I'm getting between 45 & 54 mpg on a 27 mile rush hour commute on the interstate. I've played with surface streets and, at least while school is in session, I_485 here in Charlotte has some decently spaced hills for gliding
Haven't had a tank average less than 45 mpg and think it's going to go up this summer. Still waiting for the first oil change, all I've done is raise the tire PSI to the max specified.