EOI - Engine Off Idling. Turning your engine off at a drive-up window, fast food line, waiting for a train, long lights, traffic jams, etc. Certain Hybrids such as the Prius do this automatically as they use batteries to power accessories. Instead of idling, you turn the engine off.
So many people ask me what I do to get really high mileage in the city - this and liberal use of neutral are the two main things I do.
As I am currently in the top 10 in percentage over EPA mileage, I think that it's got to be one of the things that helps me so significantly. Highway mileage - keep it 55 or under.
Looking to trade for an early 1988 Honda CRX HF (Pillar mounted seat belts)