Back when I was driving Black Widow, which is not an aerodynamic vehicle to say the least, I saw an immediate 8 mpg jump when I began EOCing to lights.
That encouraged me to begin P&Ging, and I ended up gaining another 8 mpg. I started out at around 42-44 mpg, and was able to pull over 60 mpg on one tank.
I stayed off highways and would P&G from 55 down to 35 and back, and it worked awesome for that car.
Now that I have Turtle I only EOC to lights. I have never tried to P&G in the Insight, even though it's a perfect platform for it since it autostarts. Problem is that it draws a lot of juice when the motor is off, since I leave for work when it's dark and return home when it's dark so I have the lights on pretty much every time I drive it. So I have to charge the 12V every night just to EOC, or it runs down the tiny 12V battery, which also runs down the IMA battery.
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