This document discusses a liquid nitrogen powered vehicle. It begins with an introduction to cryogenics and liquid nitrogen. The main components of a cryogenic heat engine are then described, including a pressurized liquid nitrogen tank, pressurant bottles, a primary heat exchanger, expander, and economizer. The schematic and principle of operation for the LN2000 liquid nitrogen car are then explained. When liquid nitrogen vaporizes in the heat exchanger, the pressurized gas drives the motor. Advantages include no emissions and quick refueling, while disadvantages are the lack of public refueling and energy needed for liquefaction.