Auto Scrapping

Arguably just as important than the sales of new vehicles, e.g., hybrids and EVs, are the consequences of not buying new cars.
Dec 14, 2014   Scientific American
This editorial suggests three strategies to make the American auto fleet more efficient: renewing the hybrid tax credit program (many credits have been exhausted), pursuing a "cash for clunkers program", and increasing the gas tax to supplement CAFE.
Jan 22, 2009   The New York Times