Ok, I was driving along a few weeks ago and I came across a Ram pickup sitting in a parking lot (I do happen to come across weird vehicles when I do this, don't I?) ... and I couldn't help but notice that the exhaust tip of this truck was pretty huge. More like it has been swollen up from a bad bee sting or something. So, my question is ... what's the deal with this exhaust tip on this truck? What's the point? Does it serve a purpose at all in helping the vehicle's exhaust system?