Envision Solar Breaks Ground on Tracking Solar Tree® at General Motors' Milford Proving Ground

SAN DIEGO, Sept. 6, 2012 /PRNewswire/ -- Envision Solar International (OTCBB:EVSI - News), a leading sustainable infrastructure product designer and developer, announced it has broken ground for the deployment of a Tracking Solar Tree® with EnvisionTrak™, Envision's proprietary...