We thought cash for clunkers was the ultimate waste of taxpayer money, but as usual we were too optimistic. Thanks to the federal tax credit to buy high-mileage cars that was part of President Obama's stimulus plan, Uncle Sam is now paying Americans to buy that great necessity of modern life, the golf cart. The federal credit provides from $4,200 to $5,500 for the purchase of an electric vehicle, and when it is combined with similar incentive plans in many states the tax credits can pay for nearly the entire cost of a golf cart.