According to the New York Times, the redesigned Honda Insight offers a built-in ecology game:

Honda has loaded it with an array of gauges and displays intended to coach drivers to be more economical. For instance, the speedometer’s background color changes from blue to green as one’s driving becomes “more environmentally responsible.” Readouts reward the frugal driver with an “eco score”; if you excel, you win a digital trophy surrounded by a wreath.

The author and his colleagues all found that they beat the EPA measures, probably because of the electronic coaching. How’s that for a “game for change” that might actually really change the world? Just keep your eyes on the road and watch out for cyclists, Insight drivers!