He was a recognized expert in the field of super cold and has been called the Father of Cryogenics. Due to the severity of the strokes, Mr. Boese was restricted to a wheelchair in his later years. A Pinto station wagon was converted to run on his engine and proven as a viable means of transport at extremely low cost and absolutely no pollution. As the liquid nitrogen passes through this expansion tubing, the ambient heat will cause the liquid to change to a gas through a phase change. Liquid nitrogen expands by 980 times its volume when changing from a liquid to a gas.
Expansion means pressure which translates to power.
An air motor is kind of like a paddle wheel on an old style riverboat. As compressed air is blown against the paddles, a shaft is spun which drives whatever is attached, in this case, the transmission of a vehicle. Boese said that only a slight modification to the air motor was necessary to make the it run perfectly with the expanded and very cool nitrogen gas. In the above diagram, the Liquid Nitrogen Motor takes advantage of the expansion of liquid nitrogen to a gaseous phase. This entails a volume increase of 980 times.