PinBall,
Volt moving up to 516 mpg. 3100 miles on 6.0 gallons, last check it was 478 mpg. Volt may have it's gen 2 out in 2016. The only thing I'd like is 100 mile range on battery.
I've been getting a few 70 kWh days. Today I got 17.16 and 62.52 kWh, I'm sneaking up on a 80 kWh day. Missed 80 kWh's by 1/3 of 1 kWh.
See picture of my two monitoring systems. Top is Sun Power 9.2k, other is SMA 2.45k monitoring.