Tesla's over-the-air software update to v9 (currently not yet widely available) brings the Navigate on Autopilot feature, with a capability to automatically change lanes on the highway (if the vehicle in front drives slower than the speed setting and there is another open lane on the road). Moreover, the car is guided by navigation, so it can enter and exit the highway automatically.
Speed based lane changes have three options: disabled, mild, average and mad max. Change of the lane can be done with or without confirmation (yes/no).
In several of the latest video featuring Navigate on Autopilot, Jasper Nuyens demonstrates the functionality in Europe. According to the videos, the new upgrade is a fantastic experience - kind of like magic.
Tesla Autopilot seems to respect side traffic pretty well, although because it's beta, there are still some quirks. At least once the car wanted to change over to a lane that didn't exist. There are also some mapping problems sometimes, where the car slows down, perhaps thinking there will be highway exit or something.
In other words, it's exceptional when the car does the job properly and overtakes on its own, but basically, you need to pay even more attention than in standard Autopilot without unannounced automatic lane changes combined with navigation.
We believe that at this stage, Tesla is simply acquiring data needed for further development of a more autonomous, reliable system.
Some more footage of Mad Max Navigate on Autopilot...
User Experience Design feedback when turning on Navigate on Autopilot
Last Mad Max Navigate on Autopilot movie for today!
Ano one more video - Tesla Autopilot v 9 Drive by navigation - from Dennis D: