Calling all Cars ran from 1933-1939. It's generally considered to be the inspiration for the old time radio great, Dragnet. Calling All Cars chronicles the L.A. Police Department cases. Although this is an earlier version of the same type of show Dragnet was, there are some differences.Calling All Cars was introduced at a time when Americans became much more mobile because of the automobile. Criminals could get into a waiting car, and if they got lucky enough, get lost in traffic! Dragnet came out much later, but they both gave a thorough and detailed account of the crime and the criminals...