Be light on the gas pedal,
Try not to use the brake,
Drive smoothly,
Glide downhill,
Slow down, don't go over the speed limit.
Jesus, are there really any people out there watching this video thinking "I never thought of that"? Surely all of those things are common sense.
I'm surprised one of the things listed wasn't "don't have a hole in the gas tank".
Let's be honest, anyone who cares about MPG is going to know about these techniques already, the people who don't care about it just don't care.