[Kodak]

I've changed some of my mom's driving habits, but had the advantage of driving in the car with her. It's easy when you can narrate your moves firsthand. I doubt many drivers think that they speed up to red lights, so telling them to coast is of little help. But getting them to anticipate traffic further ahead makes driving smoothly more practical, because one can then understand that slowing down early does not always mean wasting time.

So long as your coworker is genuinely interested in it, have her try to beat the baseline mpg that she has set. If you're so inclined, you can provide 3 of the best tips. No need to do it all at once.