Detroit Zoo
Below is a picture of Ron Kagan, Director of the Detroit Zoo, with one of their 40 solar carts (SG 120's) taken at the giraffe habitat and one of Gloria Copeland at the gorilla habitat
Patricia Mills Janeway, Communications Director, Detroit Zoological Society: "The solar panels appear to be working as promised. Mike Nevala and other employees have noted that the carts seem to remain sufficiently charged for our daily normal use, which is usually light to moderate without the need to plug them in. Based on what we have seen so far, we believe it would be possible to rely on solar charging for at least 60% of our normal golf cart use, only wall charging during periods of exceptionally heavy use." June, 2009.