That should be Japanese 10/15 mode, and is shown
here. It seems to be the equivalent of the US combined cycle, although it's very different. The Japanese 10 mode, which I'm guessing is the equivalent of the US city cycle, has way more idling, but not as many abrupt stops and starts, while the 15 mode has a minute of idling, and a couple minutes of consistent driving at ~35mph. Now, supposedly, a 2005 Prius gets ~33km/L=~80mpg on the 10-15 cycle, but only ~55mpg on the EPA's cycle, so there's a pretty big difference between the two cycles. I suppose you could go look up a bunch of different cars, and find the average difference in mileage between the 10/15 and EPA cycles, but really, I don't think it matters much. Maybe Matt could put in an option for different cycles, gallons, and fuel economy measurements?
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