One of the more common email requests I get is to do more reviews of rear-view mirror car cameras. It's not for want of trying, but this particular sector of the 'dash-cam' market seems to be particularly under represented. Most of the cameras currently on sale have similar out-dated internals, use the old MJPEG codec and offer (upscaled fake-hd) resolution of 1280x960.
For this video I managed to find an h.264 camera that is supposed to offer 1080p, has rotating cameras which makes it suitable for both left and right hand drive vehicles and importantly if it's to be used as a Taxi-cam has IR leds that point inwards. Watch the video below to see how it fares.
ebay purchasing links (click your country).