They shouldnt consider a certain model the same car all along.There have been many many generations of Civics,Corollas....etc,and they are not the same car.The engine from the original Civic isnt the same as today,neither is the platform or transmission,or even the size of the car itself.Joke.The closest cars that never really changed were VW Beetle,The GM A*bodies (1964-1988),the GM A-body FWD cars (1982-) and the Chrysler K based line (1981-1995).Escorts had 2 generations in the US,and the final was a Mazda 323 based car.Taurus lived 2(now 3) generations that are not interchangeable..... Just because the names the same,doesnt mean its the same car (ex..1961-1962 Dodge Lancer vs 1985-1991 Dodge Lancer).