Originally Posted by jetboy

Someone needs to invent a robot that does dent removal from inside a pipe. ... hmmm. it would not even have to very smart. stick the guy in, it expands to fit the inner tube size.. adjusts itself for the butting but when it hits an abnormal shape, it stops and rolls the spot until its round (or oval.. or whatever the majority of the tube is).

ok engineers, get right on that.