Keeping my speed limit at or a tad below, not passing folks, starting a little earlier, and coasting when possible; especially when I see a stop sign, light I begin coasting. Also, I am driving an 6 cylinder SUV and it can be done!
Each tank I have been able to consistently get over 410 miles per tank.
Prehypermiling mileage: 278.2 miles per tank
Hypermiling mileage: 417.9 miles per tank! No kidding!!!
I also don't use the air conditioning...unless I am taking my mother-in-law somewhere. The kids are used to it now and with the windows down and everyone's hair in ponytails...who cares!