The driver used colorful, yet simplistic words to describe things he didn't understand very well. The kind of dissertation where 4-letter words are used as verbs, pronouns and terms of endearment all at once.

While I dismissed his analytical prowess I thought it was interesting that his imitation of an engine shaking apart was exactly the same sound my car was making. That and the claim that he drags more than a few Toyota Hybrids off the road with this same issue... that got my attention.