[EricH]

I can think of a robot class that would qualify. Team 4 is one example; Livewire is another (sorry, forgot the number). There are others.

Drivebase as a fairly standard tank drive. Pickup is a series of hooks for the totes mounted to a chain or belt going up a tower. Maybe a specialized hook for a can goes on the top. If working the chute, a ramp-on-tether gets added.

And of the 3 of that type I can think of off the top of my head, I can remember 2 making elims and I'm not sure about the third.