PSA Peugeot Citroen Hybrid Air

PSA Peugeot Citroën's Hybrid Air technology that combines an ICE with compressed air energy storage technology. 

To cope with the challenge of creating an environment-friendly vehicle, PSA Peugeot Citroën is developing an all-new technology combining Gasoline internal combustion engine and compressed air storage. "Hybrid Air" is a key step in the path toward fuel consumption of 2 l/100 km. The major innovation lies in the way the power-train adapts to driving styles, adjusting independently to one of three modes: Air, Gasoline, Combined. Hybrid Air technology will be fitted on B-segment models starting in 2016.