https://www.youtube.com/watch?v=2dvbFh7hDCM

Bockscar, sometimes called Bock's Car, is the name of the United States Army Air Forces B-29 bomber

https://en.wikipedia.org/wiki/Bockscar

Bockscar, sometimes called Bock's Car, is the name of the United States Army Air Forces B-29 bomber that dropped a Fat Man nuclear weapon over the Japanese city of Nagasaki during World War II in the second – and last – nuclear attack in history.