Use a Prius as Aux. A/C Power Generator
See the following URL: http://www.wikihow.com/Use-a-Toyota-Prius-As-a-Backup-Generator
Reading it here vs. having someone really "tell all" about doing this for real, including the sources for the converters, etc. is what is missing.
We have occasional power outages and our house gets cold in Washington State. Using our Prius' ability to self-regulate it's batteries seems like a great idea on getting more value out of this car.
Come on your tinkering experts.... show us how to really do this.