Here in the next couple of weeks I will be installing my ReadyStop Break-away system to meet requirements for emergency stopping of Smart Car. I have towed my Smart several times without extra braking installed and had no problems stopping. On checking all states rules, under 2000# does not require extra brakes. I will be taking photos during installation for others to follow. To install, your remove the undercarriage to see where the cable will come out of the firewall. The whole front end must be removed to be able to locate where to mount the release button unit on a solid metal frame. Waiting for good weather and no rain to do the work myself.