A Powerful Yet Tiny Engine Inches Closer to Powering EVs and Drones by Jack Stewart from on 2016-06-14 13:31 (#1H5JF) Today, the X Mini rotary engine powers a go-kart. Tomorrow, it could power everything from drones to electric cars. The post A Powerful Yet Tiny Engine Inches Closer to Powering EVs and Drones appeared first on WIRED.