Silicon Valley taco delivery startup TacoCopter, which uses flying quadrotors to deliver delicious Mexican food, is currently more of a proof of concept than an actual solution to lunchtime taco cravings.

Co-founder Star Simpson told the Huffington Post that the taco-delivering drones have several issues, both legal and practical.

"Current U.S. FAA regulations prevent using UAVs [Unmanned Aerial Vehicles, like drones] for commercial purposes at the moment," she said, adding that avoiding crashes, getting the drones indoors and making sure the food gets to the right person are all obstacles to a full-fledged TacoCopter launch.

Although the service may not be viable yet, it does raise some important questions, like "How soon can we get one-click food delivery via unmanned drone?"

Hey, if a robot can fetch you a sandwich, there's hope that a quadrotor will one day airlift you an emergency taco.

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