In the 1920s, Los Angeles was at the forefront of eco-friendly public transport, with rail-cars all over the place. They transported people during the day, and freight during the night.
By the 1950s, either through bad management or an evil economic conspiracy, the trams were gone, and Los Angeles was to become famous for traffic jams and use of automobiles for every purpose.
Sadly, this the same story nearly all over America, the UK, Europe and Australia.