The biggest problem I see with your situation is you'll be using a lot of ICE...The Gen1 Volt uses premium fuel so when factoring a Volt to a Prius there's more to the story than MPG...Also the Volt charges slowly at public charging and may not be free...I would say look into another used car you may enjoy more than the Prius...While not as cheap as an used Prius or Volt, a used Lexus CT200 is a bargain...Other dealers can be had on VWs...Just test drive a variety of used hybrids and buy the one you like...