I lived and worked in Mexico City from 1971-73, for an American company designing their power plants. On weekends I would rent a car to visit places of interest- mainly Indian ruins, Acapulco, and that other tourist place whose name has skipped me now. The car leasing agents would invariably cautioned me - that if I am involved in any accident to escape far from the accident place and abandon the car before the police came. I asked him why? He answered because the police will put you in jail regardless of whose fault it was and ask for a big bribe since you are a rich American ("Gringo") - it is their main source of income.