I think that the friction of the wheel moving would create static electricity, while moving, so the bot wouldn't ever run out of power. This is just a guess, but I am not sure.

Hilarious... What a cheap shot though. Ha ha ha😂😂

great i am never leaving my house again

what was the scientist thinking? like, hey! lets eat a toxic fruit from a toxic tree!!! yay!!

Ya, I was thinking the exact same thing... Why not have a defense system or an alarm with lots of decibels? You've GOT TO have more security...

real cool