Heh, that's probably your secret to the mad mileage$, yo. I bet you've got a biomass gasifier in there, so the more bugs and grass clippings you collect, the less gasoline you consume.
the SGII can't account for distance traveled while the engine is off. This is one of those things I can just feel though - I can tell its working pretty well.
I don't know if you are using the key or a kill switch to shutdown the engine but I wonder if you just go to set-up and change your SGII vehicle to a hybrid if it will keep on working for you. Might also have to change the cut-off setting.
Heh, This thread has officially become a zombie thread. I posted that ages ago before I even knew there was a hybrid setting. Now I'm not even using the SGII. Thanks for the input though.