Chevrolet has big ambitions for its tiniest electric car, the Spark EV. The earth-friendly city car follows the Volt, dropping the gas engine in the process and embracing emissions-free motoring at a competitive price. As we've seen, though, small EVs can easily fall into the trap of being so eco earnest as to be deathly dull, or alternatively entirely impractical for everyday use. Can the Spark EV keep the best of its gas-powered predecessor and blend it with the benefits of electric motoring? We caught up with Chevrolet for an extended test-drive to see how the Spark EV fared.