Waiting for my Nissan leaf, and first thing I will modify is install my current 20$ dash camera from ebay inside glove box and try to connect to front Nissan stock camera.
I do not like have camera mounted on the windshield and wires hanging to cigarette power socket (in my Prius now).
All it need is SD card recorder hidden some place eg. glove box. Recording cameras are big help when comes to collision or vandalism to deal with insurance and police. Dash camera starts recording when power up the car, and record in the loop very good quality video and voice plus time and date.
I will post when successful.