Google's drones were part of its drone-delivery system Project Wing, under the Google Project X research lab. The goal was for these delivery drones to be capable of vertical take-off and landing. Such a feature would be useful in busy commercial and residential areas, but Google hasn't quite perfected it yet. The prototype used a single-winged design spanning five feet. Google announced at SXSW that it has actually scrapped the design completely, opening the door for new designs and engineering innovation. This, honestly, sounds like they put a positive spin on an expensive failure.