A ribbon-cutting ceremony was held in Yosemite Valley today to commemorate the arrival of four hybrid (electric/diesel) tractors that will be used in the popular Yosemite Valley Floor Tours. Acting Superintendent Dave Uberuaga and DNC Parks and Resorts at Yosemite, Inc. Chief Operating Officer Dan Jensen cut the ribbon as 60 park visitors were embarking on their tour of Yosemite Valley. https://www.nps.gov/yose/learn/news/hybridtrams.htm