What is a CAN bus wiring system capable of?

This video made by Westfalia-Automotive showcases how cars with CAN bus can tow when using dedicated electrics or towbar wiring. By using dedicated electrics, your car's electronic system works together in harmony with the towbar, turning on and turning of specific features in order to help you tow. For example when reversing while towing a caravan, you reversing alarm will be turned off, and when driving up a steep incline, the dedicated wiring will work with your car engine to optimise performance.