![Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises](https://c8.alamy.com/comp/2D2W9EG/guy-negre-head-of-french-company-mdi-enterprises-sa-looks-at-a-motor-which-runs-entirely-on-compressed-air-producing-zero-emissions-in-carros-south-eastern-france-january-4-2008-mdi-enterprises-recently-signed-a-contract-with-the-indian-group-tata-reuterseric-gaillard-france-2D2W9EG.jpg)
Guy Negre, head of French company MDI enterprises s.a, looks at a motor which runs entirely on compressed air, producing zero emissions, in Carros, south eastern France, January 4, 2008. MDI enterprises
![Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/e1007ce9-1d6b-474c-86db-5f10dd1a0501/eng212034-fig-0008-m.jpg)
Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library
![Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library Investigation and implementation of compressed air powered motorbike engines - Nabil - 2019 - Engineering Reports - Wiley Online Library](https://onlinelibrary.wiley.com/cms/asset/bd8bd868-642f-4af6-92b1-d3511357e726/eng212034-fig-0002-m.jpg)