Extremely dangerous. In the US there are entire convoys with giant flashing lights and crash barricades attached to the rear of work vehicles. They'd be blockin

Extremely dangerous. In the US there are entire convoys with giant flashing lights and crash barricades attached to the rear of work vehicles. They'd be blocking the entire left lane. This is a bigger failure for safety standards in China than it is a failing of Tesla. The rear-end collisions like this happen all the time without autopilot.