The other night I was driving the 8 miles from town out to our house. The highway has a ever so slight downgrade. Leaving town, I accelerated up to 45. During acceleration the FE readout was showing both the motor and ICE to the wheels at the same time. I eased off at 45 putting on the cruise. The EV shut off and only the ICE was running. It ran all the way to the turnoff to our house. I had plenty of time to watch the scan gauge. The gallons per hour was down to .4 and the rpm were rather low at about 1250 rpm. The engine load was something like 60.

I'm new to this and was curious what mode I was in. I forgot to mention, the whole 8 miles the mpg needle was sitting at 59 or 60 . I checked and the scan gauge mpg read the same thing. I thought to myself, at certain throttles this can be a really lean burn engine.