Fuel cell
There are many uses for fuel cells —  major automakers are working to commercialize fuel cell cars.  Toyota and Honda have released the Mirai and Clarity respectively.  Fuel cells are powering buses, boats, trains, planes, scooters, forklifts, and bicycles.  There are fuel cell-powered vending machines, vacuum cleaners and highway road signs.  Miniature fuel cells for cellular phones, laptop computers and portable electronics are predicted.  Hospitals, credit card centers, police stations, and banks use fuel cells to provide power to their facilities.  Wastewater treatment plants and landfills use them to convert the methane gas they produce into electricity.  Fuel Cells have long been used in outer space.  Telecommunications companies use fuel cells at cell phone, radio and 911 towers.