[relet]

I was thinking about entering the bank when a tiny roomba with a dead battery crashed on the pavement in front of me, leaving a crater of rubble and plastic.

[njharman]

Tiny Roomba would probably have such low terminial velocity it may just blow away or land like a feather.

Tiny Roomba, like the robot in OA, won't require power to stay stuck to window.

Tiny Roomba, like Roomba's today, will know it's power reserves and be able to return to charging station before shutdown.

Tiny Roomba will be solar powered.