I just finished wiring my house with a transfer panel so I can put a few circuits on a UPS. As a Volt owner, I also figured, "hey, wouldn't it be cool to get, say, a 1000W 12V inverter, hook it to the 12V battery in my car, and use its nice big battery pack and quiet motor-generator in place of a generator?" In the case of the Volt (apart from relatively high parasitic power draw and it shutting down after 90 minutes), this works really well--the ~60A DC-DC converter will pull from the high voltage battery pack to keep the 12V battery full, and when the high voltage battery eventually runs down it will turn on the gasoline engine and use that for power. Bingo, 10+ kWh of stored energy, a gas generator that's way quieter than anything I could buy, and a big ol' portable fuel tank. Then of course I went and bought a Clarity almost immediately. Google was proving useless, so does anyone here have an idea of what the capacity of the DC-DC converter that feeds the 12V battery is, and how the Clarity behaves when in park (or neutral) with a high draw on the 12V battery? I've noticed that even in "eco" mode my Clarity will turn on the gasoline engine if I sit there in park listening to the radio for even a few minutes, which seems fantastically pointless and is tremendously annoying if I've got plenty of high voltage battery capacity left (seriously, the gas engine is noisy and I'm sitting on 15kWh of energy, why the heck are you turning on the engine?). Which leads me to believe that the car doesn't like to pull from the high voltage pack when "idling". Any concrete info on this? I'd also rather like to be able to disable that stupid "idle with full battery pack" misfeature, but I'm not holding my breath there.