The US cash for clunkers program has been given new life by the approval of an additional $2 billion. Environmentalists are complaining that there is nothing in the legislature that encourages people to purchase fuel efficient vehicles (just better than what they previously had). However the objective was to give new life to the automobile industry with the environment being a distant secondary benefit.
That being said, similar programs previously enacted in UK and Germany have had their own problems. In UK, car sales have improved slightly however they are still more than 20% lower than last year. In Germany, the law is being abused as clunkers are being shipped to Africa and other European countries rather than being scrapped! Dealers are being reimbursed by the government and also getting money for selling the cars.
In the US now is exactly the right time if you want to get government money to buy a gas guzzler like an H3T with a combined gas mileage of 16mpg!