Programs Try to Spur Move to Fuel-Efficient Cars - NYTimes.com

Ms. Sutton’s measure would give those trading in an old car a $4,000 voucher that could be used to buy a new car that was assembled in the United States and has a fuel efficiency rating of 27 miles per gallon. A car assembled elsewhere in North America would have to get 30 miles per gallon to qualify for the $4,000. And cars that are both assembled in the United States and rated at 30 miles per gallon would fetch a $5,000 voucher.

Programs Try to Spur Move to Fuel-Efficient Cars - NYTimes.com