The Missouri and Kansas Interurban Railway was an interurban line running from Kansas City, Missouri to Olathe, Kansas.
It ran from the early 1900s through 1940 and was the last of the interurbans in the Kansas City metropolitan area.
It was called the "Strang Line" for the Johnson County developer William B. Strang Jr..
References
Missouri and Kansas Interurban Railway Wikipedia(Text) CC BY-SA