People check out the 'Smart Car' during the 'Earth Day on the Promenade' festival on Saturday, April 14, 2007. The Smart Car is manufactured by the Mercedes Group and is air-cooled, turbocharged and has a  three-cylinder, 698cc (0.7 L) rear-mounted engine. It and can reach speeds of 80 miles-per-hour  and gets 40 mpg with an average combined city-highway driving.