[EricH]

Driveable vs not driveable--I think you really want "steerable" vs. "non-steerable". Some teams just parked their main robot in their home zone. Others dropped a tether before they left their home zone. The latter are "non-steerable".

Non-steerable tethers also included the tape measures I mentioned earlier and any other means of "going home" that once launched could not be redirected. I would say, probably about 30% of tethers, maybe more, fell into this category (and the tape measures were far too common... but that's a story for another day.)

Steerable tethers would drop off a robot and be driven home just like a miniature robot, steering and all. 330 carried 2 wheels driven by Globe motors and attached by a long electrical cord and "scissors lift", for example--drive it forwards, wait for it to stop bouncing, full-speed for home zone and dodge traffic all the way. Other teams had something similar.