Just note that all the features of the Tesla's are dependent upon its' vision system and no radar is currently being used. That being said, it is tentative at best!! Just yesterday the rural postal lady in her little USPS van was half on/half off the roadway while she was delivering mail into a small, roadside mailbox. My MSLR never even slowed down!! I had to yank the yoke at the last second to avoid a huge crash. I think commonsense would say that the vision system should be able to see and recognize a vehicle halfway into my lane of travel but nope!!! And the stories I could tell of the ridiculousness of this car!! Honestly, if I had to do it all over again, I would not purchase another Tesla until the bugs are worked out, in about 10 years!! It's a very stressful car to drive because it will do random acts of ridiculousness that you just can't prepare for so you must constantly be hyperaware. One last example, driving eastbound on I-20 about 1-1/2 east of Dallas, very rural stretch of interstate and just myself and a semi-truck on this stretch of interstate. While in FSDb I was traveling 80mph in a posted 75mph zone and in the right lane as I approached the semi I activated my turn signal to move to the left and around the truck. Halfway into the left-hand (#1) lane my car suddenly and VERY rapidly yanked back into the right lane (#2), then mistakenly identified the lane markings for the exit lane as my highway lane markings and attempted to exit the interstate at 80mph!!! This was so fast and so abrupt that when I yanked the yoke to stay on the interstate the rear tires actually broke traction. It's these sort of events that just cause major frustration and can put you in a very dangerous situation.