Read this blog ! Practice your English! Come on ( venga ya)!. No deadlines (fechas tope). No exams. It's just a fun way to learn the language.
I'm astonish about these cars that use the air as combustion of the engine and so do it move!! I never have heard about it until yet and I must to look for myself if that could be possible so first I saw the links that you put in the post and they are incredible and then I search the web page of this business and I could see different models. A part that it has a funny models, this type of machine will be with any doubt the future of the engine. The only bad thing I see is that it have the same problem that the hybrid cars and they haven't enough power to go up a slope. So they can't be used in all the zones, although its a good solution to solve the daily tones of pollution emitted by the cars in the big cities. Maybe this will stop a little bit the advance of the climate change.