I personally think people will give up their homes before they give up their automobiles. When gas was over $4/gallon in 2008 I was carpooling with a co-worker. We were already carpooling, but we were surprised that we were not able to convince ANYONE else to carpool. They needed their cars for errands and lunch -- could not go without them for even one day. Everyone just moaned, but not one person could be bothered to pack a lunch one day a week.