Agreed, the headline is a bit misleading. It can fly, roll on 4 wheels, or roll on 2 wheels. The latter is interesting, but doesn't constitute "walking", espec

Agreed, the headline is a bit misleading. It can fly, roll on 4 wheels, or roll on 2 wheels. The latter is interesting, but doesn't constitute "walking", especially when the point of walking (as a preferred method of locomotion) is to be able to step over obstacles or onto platforms like stairs, which rolling on two wheels obviously can't accomplish.