Interesting stuff...the site is not the easient to find information, but I finally found a statement regarding the air purification...
>From http://www.theaircar.com/tecno.html Air filtering system. The MDI engine works with air taken from the atmosphere and compressed air in the tanks. The air compression takes place through the onboard compressor that is incorporated in each car or in an air-refilling station equipped with a high pressure compressor. In order for the air to be compressed, it must be filtered previously, to remove all possible impurities that could damage the compressor. Carbonic type filters are used to remove dirt, dust and abundant abrasive particles that unfortunately exist in the air of our cities. This factor is truly revolutionary in the automotive world, now that it is the first time an engine produces negative contamination, in other words it eliminates and reduces already existent pollution rather than releasing dirt and burnt gases. The exhaust pipe of the MDI vehicle expels clean air, that comes out fresh (between -30 ¼C and 0¼C) and does not cause disruptions to any form of life. Thanks to this system, the air leaves the vehicle cleaner than it entered. Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/