content: It's not bullshit. Intelligent Energy clears fuel cell powered drones for take-off. "fuel cells offered drone operators longer flight times, fast refuel capabilities, and flexibility for varying payloads, addressing some of the biggest challenges faced by the nascent sector." http://www.businessgreen.com/bg/news/3007080/intelligent-energy-clears-fuel-cell-powered-drones-for-take-off  In 5 years, almost all drones will be hydrogen powered. There's just no comparison. Batteries are heavy, hydrogen is lighter than air.