Rolls-Royce Electric Plane To Achieve 300 Miles Per Hour! Spirit of Innovation Aircraft Completes a New 15-Minutes Flight Test Rolls-Royce electric plane, Spirit of Innovation, completes its latest flight test. The company now enhancing it to achieve 300 miles-per-hour speed. by Griffin Davis
Wearable Batteries Could Soon be Concealed in Strap! Researchers Create Fiber-Like Material That Can Store Energy