I don't know, but i have been thinking about getting one her in chikaga too.
This one looks nice, especially for the 170 degree view angle. Hidden mode being all screen and indicator lights off? supa-stealth with decent compression.
http://www.gearbest.com/car-dvr/pp_69368.html?currency=USD&gclid=CLux4raXzcoCFYGCaQodR1cCEA