Only those who were already considering buying a new car will really benefit. IMHO, almost nobody should consider getting a new car on credit during this recession. Yet many people will get indebted to buy a new car they don't really need, much less can afford. Only because they got $4k rebate (already included in the sticker price), anyway. As Robert Kiyosaki said in Rich Dad, Poor Day, poor and middle class get worthless things, thinking they are assets.