> One scientist learned that smog was a result of automobile emissions as early as 1948 .... That was 56 years after automobiles were first produced. Shortly th

> One scientist learned that smog was a result of automobile emissions as early as 1948 .... That was 56 years after automobiles were first produced. Shortly thereafter ... in 1955 .... They were never given the chance to self regulate. 60 years is 'never given the chance'?