A Kryptonite Engine was a device very similar to a 20th Century Earth car engine used by Kryptonians on Krypton. Despite Kryptonite being a poison for Kryptonians, the radiation it stored was excellent for such weapons and hence, when contained, was very useful. The most famous use of this engine was by Jor-El, when he used it to power the Brainiac AI and send his son, Kal-El to Earth.

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