It's probably much more efficient with those kicking feet than a propeller. It's got both the buoyancy of a blimp and the low power use of a ground vehicle. It

It's probably much more efficient with those kicking feet than a propeller. It's got both the buoyancy of a blimp and the low power use of a ground vehicle. It's typical of researchers to play with concepts first and hope someone else will come up with applications later. Maybe that will never come or this isn't the right time for it. Perhaps if we have more lightweight screens and cameras, it could become a telepresence robot.