Toss them into a pile will make them more compact. Really it wouldn't take too long to clear a whole sidewalk of them, granted it might get more difficult once the pile gets to significant height. But I'm thinking 1 scooter toss every 2-5 seconds: 1 grunt grab, 2 grunt grab, 3 grunt grab etc, you can imagine it happening at a decent pace.
End result is the same, they’re out of the way… Just a bit more rage maybe in the process.