The federal government’s ‘Cash for clunkers’ program aims to boost cars sales and cut fuel use by letting car shoppers trade-in their older, gas guzzling vehicles for a rebate from $3,500 to $4,500 toward the purchase of a newer, more fuel-efficient vehicle. Cascade President John Charles points out why the program won’t work as intended, and how it will create a shortage of used cars, thus driving up their prices and making it even more difficult for low-income people to purchase affordable transportation.