A Prius as a backup generator for your home?

I just got around to reading the article, A Plug-In Prius that Powers Your House, which talks about a PGandE program that would enable plug-in hybrids to essentially serve as backup generators during blackouts, etc. Even more interesting, PGandE - the Nation's largest electric utility - is having discussions with Toyota about producing plug-in hybrid vehicles. While I believe that plug-in hybrids are still a couple of years away from mass production, I think it is now inevitable that they will be mass produced, which is simply spectacular news.