$4 gasoline is nearly here in silicon valley. Relative to the cost of housing, $4 is nothing. Anyway, if energy costs (of all sorts) were to double or triple, I'd rather live somewhere that doesn't require heating or cooling of houses and where bike riding and walking are reasonable all year. With 75% of the vehicles removed from the roads (due to fuel costs) and the multi-lane roads partially blocked off for bicycle use only, bicycling would be a great way to get around much of silicon valley. I'd rather be in San Jose (or Sunnyvale) than any of the cities listed above for those reasons. I turned off my heater last month and probably won't turn it on again until November; I don't have air conditioning.