I have an E-Prance Mini 0801 with a 32GB Samsung SD card in it, picture quality is really good, to the point you can see the incoming stone that broke my windscreen the other week! It's permanently fed and hidden up behind the rear view mirror so it's hard to spot.
If I remember I'll bring it in from the car later today to upload a test shot or video (although there are lots on youtube already).
For some reason Amazon isn't giving short links today but it's Ā£61 and the Amazon description is "E-PRANCEĀ® New Mini 0801 Original Ambarella A2S60 Chip 5M pixel CMOS Car DVR Recorder + High Resolution Full HD 1080P 30 FPS, OV2710 + G-sensor License Plate + H.264 + 135 Degree Wide Angle View + GPS Logger + Build-in 8GB Memory,Support HDMI/TV Out" !