Poor Man's Car Video System

My latest WOW purchase from Ebay China for $12: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&rt=nc&nma=true&item=320625718487&si=S%252Bu%252Bv8pONvXbuaLkXdr6TjbbXcc%253D&viewitem=&sspagename=STRK%3AMEWNX%3AIT Tiny cigarette-lighter MP3/MP4 unit has a 1.8" screen and broadcasts audio through your car's stereo system. SD-card compatible. Can display compressed movies on screen (don't watch and drive) or just display info about the MP3 playing. And yes, it comes with an IR remote! How do they do it...?
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-Phil