![Cars powered by compressed air, left, a "Miniflow Air" and "AirPod" of MDI ( Motor Development International), are seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, Cars powered by compressed air, left, a "Miniflow Air" and "AirPod" of MDI ( Motor Development International), are seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30,](https://c8.alamy.com/comp/2NF667T/cars-powered-by-compressed-air-left-a-miniflow-air-and-airpod-of-mdi-motor-development-international-are-seen-at-the-mdi-head-offiice-in-carros-near-nice-southern-france-friday-jan-30-2009-ap-photolionel-cironneau-2NF667T.jpg)
Cars powered by compressed air, left, a "Miniflow Air" and "AirPod" of MDI ( Motor Development International), are seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30,
![A compressed air engine for compressed air car "AirPod" of MDI (Motor Development International), is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (AP A compressed air engine for compressed air car "AirPod" of MDI (Motor Development International), is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (AP](https://c8.alamy.com/comp/2NF665N/a-compressed-air-engine-for-compressed-air-car-airpod-of-mdi-motor-development-international-is-seen-at-the-mdi-head-offiice-in-carros-near-nice-southern-france-friday-jan-30-2009-ap-photolionel-cironneau-2NF665N.jpg)
A compressed air engine for compressed air car "AirPod" of MDI (Motor Development International), is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (AP
![Advancements in compressed air engine technology and power system integration: A comprehensive review - ScienceDirect Advancements in compressed air engine technology and power system integration: A comprehensive review - ScienceDirect](https://ars.els-cdn.com/content/image/1-s2.0-S2772970223000378-gr5.jpg)
Advancements in compressed air engine technology and power system integration: A comprehensive review - ScienceDirect
![A car powered by compressed air, the "Miniflow Air" of MDI (Motor Development International) , is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. ( A car powered by compressed air, the "Miniflow Air" of MDI (Motor Development International) , is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (](https://c8.alamy.com/comp/2NF6635/a-car-powered-by-compressed-air-the-miniflow-air-of-mdi-motor-development-international-is-seen-at-the-mdi-head-offiice-in-carros-near-nice-southern-france-friday-jan-30-2009-ap-photolionel-cironneau-2NF6635.jpg)
A car powered by compressed air, the "Miniflow Air" of MDI (Motor Development International) , is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (
![MDI engine scheme, 1 -piston with smaller diameter, 2 -crankshaft, 3... | Download Scientific Diagram MDI engine scheme, 1 -piston with smaller diameter, 2 -crankshaft, 3... | Download Scientific Diagram](https://www.researchgate.net/publication/356655034/figure/fig2/AS:1097791493419008@1638745296220/MDI-engine-scheme-1-piston-with-smaller-diameter-2-crankshaft-3-connecting-rod-4.jpg)
MDI engine scheme, 1 -piston with smaller diameter, 2 -crankshaft, 3... | Download Scientific Diagram
KLM Testing MDI AirPod Compressed Air Cars at Schiphol; UC Berkeley Study Finds Compressed Air Cars Significantly Less Efficient than Battery Electric Vehicles - Green Car Congress
![A car powered by compressed air, the "Miniflow Air" of MDI (Motor Development International), is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (AP A car powered by compressed air, the "Miniflow Air" of MDI (Motor Development International), is seen at the MDI head offiice in Carros, near Nice, southern France, Friday, Jan. 30, 2009. (AP](https://c8.alamy.com/comp/2NF6683/a-car-powered-by-compressed-air-the-miniflow-air-of-mdi-motor-development-international-is-seen-at-the-mdi-head-offiice-in-carros-near-nice-southern-france-friday-jan-30-2009-ap-photolionel-cironneau-2NF6683.jpg)