Runways are inconvenient, and helicopters are inefficient. Between these two statements is the quest for Vertical Takeoff and Landing, or VTOL, flying machines. Hampered for decades by the difficulty of building such an aircraft that can switch from hovering to forward thrust mid-flight without jeopardizing the humans inside, drones have rapidly adapted to the task. Like this one, the V-Bat from Martin UAV, on display at the drone industry’s Xponential conference in New Orleans this week.