DaimlerChrysler's smart Microcar Brand Cleared for U.S. Sales

What's the smallest car sold in the U.S.? If the first car to pop in your head was the MINI Cooper you'll need to guess again, because now that Zero Air Pollution (ZAP) has won approval to sell DaimlerChrysler's smart fortwo coupe and convertible models in eight states, the MINI is no longer the most diminutive subcompact.