As 91视频 senior Angela Deibel guides the ZEV (Zero Emission Vehicle) from the Aeronautics and Technology Building to front campus on a recent sunny day, she glances at a row of small lights that flash overhead. 鈥淭hose lights let us know that the battery has charged,鈥 she explains to a passenger. 鈥淥ne day of sunlight (24 hours) equals eight miles.鈥 The ZEV is a repurposed golf cart with an electric engine powered by three sources: a fuel cell, solar panel and batteries. The fuel cell efficiently converts fuel, such as hydrogen into electricity with no greenhouse gas emissi...