With gas prices at $1.98 a gallon and crude at $55 a barrel in November and falling further are Americans going to need some special incentives or a gas tax not to go back to low fuel efficency or large vehicles? With about $1 trillion dollars of consumer debt in credit cards, auto and other loans and student loans, zero savings rate, and heavily in debt, and millions under water on their mortgages, the incentive is in the need to use the savings from lower gasoline bills to paydown debt. There is also the shift to parttime workers in the workforce a long term structural change similar to Japan after the economy became stagnant there. Parttime work means lower incomes and uncertain future and need to spend carefully. All these things will likely make the shift to higher fuel economy permanent, including legislative mandates, and new management at the automakers committed to serious conservation and the environment if government aid money brings new management at GM. And public habits are changing in how much and where they drive in pickups and SUV's, many using smaller cars and letting the SUV sit on the driveway for 2 or 3 car families....