More than 3,000 attendees made it to ACT Expo 2013 last month in Washington, DC, making it the largest and most significant US annual conference on alternative fuels and vehicles. It took place at the Walter E. Washington Convention Center in partnership with the U.S. Department of Energy as a platform put key players together in green ground transportation......The Article ACT Expo 2013 Hits the Mark in Washington, DC appeared first on Automotive Digest.