Public Transportation In Los Angeles

When I was growing up, back in the 80's and early 90's, there wasn't much in the way of public transportation in Los Angeles.  Sure we had buses and sometime in the 90's Metrolink started shuttling citizens from the outlying suburbs and towns into downtown, but that was basically it.  Today public transportation has come a long way with the ever expanding metro lines and more efficient and expanded bus routes, but it makes me wonder what LA could have been like if the old Pacific Electric Red Cars were never torn down and city planners had the foresight to invest in, promote and incentivise public transportation.  In cities such as London, Paris, Hong Kong and New York, you can get from place to place without an automobile relatively quickly and inexpensively, and Los Angeles should be on this list. 

We can't keep adding lanes to the 405, 101 and 5...