Traffic-Aware Cruise Control (TACC) assists with acceleration and deceleration of the vehicle whilst Autosteer provides assistance with steering of the vehicle.
Further literature provided by Tesla states that drivers should 'never depend on TACC to adequately slow down model S, always watch the road in front of you and be prepared to take corrective action at all times. Failure to do so can result in serious injury or death'.
Investigating officer PC Kirk Caldicutt, from the Bedfordshire, Cambridgeshire and Hertfordshire Road Policing Unit, said: "What Patel did was grossly irresponsible and could have easily ended in tragedy. He not only endangered his own life but the lives of other innocent people using the motorway on that day.
"This case should serve as an example to all drivers who have access to autopilot controls and have thought about attempting something similar. I want to stress that they are in no way a substitute for a competent motorist in the driving seat who can react appropriately to the road ahead."
-Daily Telegraph UK