The first subway car with side doors goes into service in New York City. New York did have the nation's first elevated line, or the "El". The first underground transit was in London and opened in 1903. The second was the Glasgow, Scotland in 1891. Remember Budapest and Paris. How about Boston and Philadelphia. Chicago waited until 1943 for an underground. Today there are 63 subways, and Bearwiskers says...let's ride them all!