After fourteen years of research and development, Guy Negre has developed an engine that could become one of the biggest technological advances of this century. Its application to Compressed Air Technology(CAT) vehicles gives them significant economical and environmental advantages. With the incorporation of bi-energy (compressed air + fuel) the CAT Vehicles have increased their driving range to close to 2000 km with zero pollution in cities and considerably reduced pollution outside urban areas. The application of the MDI engine in other areas, outside the automotive sector, opens a multitude of possibilities in nautical fields, co-generation, auxiliary engines, electric generators groups, etc. Compressed air is a new viable form of power that allows the accumulation and transport of energy. MDI is very close to initiating the production of a series of engines and vehicles. The company is financed by the sale of manufacturing licenses and patents all over the world. (http://www.theaircar.com/)