One of the engineers says, "We merely wanted to resolve the traffic problem with a subway like Munich's or Dublin's." But Dublin had no subway in 1972 and still doesn't have one; the current plan is to have one operational by 2027.
Peter Gonzales Falcon's hairstyles are all in the longish 1972 mode, even though the portions of the film in which he appears are supposed to be taking place thirty or more years earlier, at which time men's hair was cut much, much shorter, and would never be worn as it appears in this film.