It says here:

Alimentación (fuel) = Inyector electrónico de aire (Electronic air injector)

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Emphasis on 'electronic' air injector. They still have to have energy to make energy.

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Their disclaimer:

Presentamos a continuación una imagen animada del motor definitivo (distinto al mostrado arriba), actualmente en los bancos de prueba de MDI Francia y en curso de montaje en los primeros vehículos.
Incluirá diferentes sistemas adicionales que por razones de secreto industrial no se pueden hacer públicas todavía.

Roughly translates to:

We present an animated image of the definitive motor (which difers from that above), at our places of testing at the MDI Francia and montages of our first vehicles. Including diferent additional systems that for reasons of industrial secrecy cannot be made public at this time.

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Marcia

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Emphasis on 'electronic' air injector. They still have to have energy to make energy.

http://www.motordeaire.com/como.html

http://www.motordeaire.com/como.html