Zion National Park shuttles are now electric 

Zero-emission electric visitor transportation is now operational at Zion National Park. National Park Service Director Chuck Sams was joined by General Services Administration Administrator Robin Carnahan, Kaibab Band of Paiute Indians Chairman Roland Maldonado, officials from the Zion National Park Forever Project, the National Park Foundation and local leaders to unveil the new fully electric fleet at an event in Zion National Park on Sept. 4. https://www.nps.gov/orgs/1207/zion-national-park-shuttles-are-now-electric.htm
Source: National Parks Zion