I never personally saw anything that shady in my very short stint as a car salesmen. There were salesmen that were just all around trash for sure. One guy told me about having a co-signer "sign" for the car in the back room, when that person was actually in jail. That same general manager I spoke of came back from a test drive of a potential trade in vehicle and told me he went 60 mph down a side street and stood on the brakes and got the car sideways before coming to a stop. Other than that, the utter trash of the sales people only usually extended to their own personal lives.