The camera was mounted on my scooter and works well when getting started. I also used by rental car on the North American territory (with additional card US / Canada). Not many navigation mistakes and good reactivity in case of change of course. As against the proposed voices are absolutely horrible and sometimes difficult to understand. The vocalization system is not developed and bug in some cases repeating a uncommanded 4 or 5 times the same information! In 2 wheels, the system works very well between the mobile and the headset earphones. Qq random behavior in the connection features.