When you crash ChopRaider- say something along the lines of "alright, here I come!" or "This Is The Greatest Plan!" or maybe- " I'm The Bold Action Man!"
Why not roombas? In reality, they're a ground based version of the janitor bot and like to ram stuff to get to the mess. Like janitor drones, but a bit funnier. I understand if you don't want to "clone" the janitor drone though.
Report issues properly so I can fix them. http://www.kongregate.com/forums/9794/topics/725152