Chrysler Group says it has developed a tank to store compressed natural gas that mimics human lungs and will allow the cheaper fuel source to more easily be used in automobiles.
The design uses smaller compartments inside a larger tank to increase fuel capacity and storage, similar to the alveoli within the human lung. It would free automakers from being forced to use large reinforced cylinders to store compressed natural gas onboard automobiles and would allow fuel to be stored within non-cylindrical shapes.
Source
Automotive News