mdi air car - after twelve year of recharch and development, Guy Negre has developed an engine that could become one of the biggest techonological advances of this century. its application to cat vehicles gives them significant economical and enviornmental advantages. With the incorporation of bi-energy (compressed air+fuel)the CAT vehicles have increased theirdriving range to close to 2000km with zero pollution in cities and considerably reduced pollution outside urban areas. as well as the, the application of mdi engines in other areas, outside the automotive sector,opens a multitude of possibilities in nautical field,cogeneration,auxillary engine,electric generator group, etc. C ompressed air is a new viable form of power that allows the accumulation and transport of energy. MDI is a very close to initating the producation of a series of engines and vehicles. the company is financed by the sales of manufacturing licences and patents all over the world.