http://www.autodvdgps.com/citroen-c4-dvd-player-with-gps-navigation-and-digital-hd-touchscreen-and-bluetooth-swc-p-887.html
The newest car DVD version for Citroen C4. It is plug-and play so you don't need to cut the wires. It integrates built-in GPS & bluetooth, HD touchscreen, steering wheel control(with canbus). Dual zone function is also supported so you can enjoy the music while using navi.