Anyone have experience with in-car camera setups? link inside
 

Anyone have any comments or feedback on something like this item?

300KP Wide Angle Car DVR Camcorder w/ AV-Out/SD Slot (2.5" TFT LCD) - DX Offers - Free Shipping - DealExtreme

full thread on dash cams
http://www.revscene.net/forums/65043...m-rolling.html

I have this one and most of the people ordered the same.
http://www.ebay.com/itm/6-IR-LED-2-5...ht_2961wt_1396

They're handy, and have really come down in price.
I've installed lots of them, but the recordings are
not admissible in court. (here in HK, anyway.....)
The 16-passenger mini buses that run on the roads
here are the most widespread users of these cams.
Some of those drivers are pretty scary, so I'm guessing
the cameras are as much to keep the drivers in line, as they
are for determining culpability.

Any details / links about the argument why it's not admissible in court?