I will say this:
I too have used a RC truck for wire pull for cat5 in drop ceilings. It's some 4x4 monster truck thing. No cameras, just floor it and pray!
As for a x10-bot, that's adventurous! If I made one, I could see some day the door bell ringing and the neighbors are standing there with my bot thats been running around in the street.
I like to keep x10 stuff on a short leash for now,
But you go man. and thanks for the links. - fun reading.