At higher speeds you still have active cruise control with stop&go and lane keep assists, which is very similar to what Tesla currently has.
No, but I found this feature pretty much worthless at the moment, since it cannot detect cars coming up behind you, so it's still a manual process. On the other hand, Tesla doesn't have some of the more useful features that Audi has, such as cross traffic detection or top-down camera view (see
here for a list of available features).
The Lane-keep assist in the Audi is not even close to what Tesla's autopilot does. It will ping-pong between the lane markers if you're not making adjustments to the steering wheel, it is not capable of keeping you between the lane lines at all on curves, and there is no side collision warning or avoidance. The Tesla autopilot is locked in the center of the lane at all times (minor exceptions on hard curves where it will drift towards the outside of the lane, but still stay within the lane), requiring no micro-adjustments from the driver.
Mercedes Distronic and Volvo's lane-keeping systems behave the same as the Audi's.
People need to stop the false equivalency between lane-keeping systems from other manufacturers and Tesla. Telsa autopilot is in a different class.
The only system out there that behaves equivalent to Telsa's is Cadillac's SuperCruise. However, it's only available on major interstates that have been pre-approved, almost all of them are inter-city, making the system useful only for road trips. In addition, there are no OTA updates, so the system as you buy it will never improve.
The one thing Tesla could learn/copy from Cadillac's SuperCruise system is the head/eye tracking software. That would enable the Tesla system to be completely hands free by using the camera to make sure the driver is watching the road instead of having to touch the wheel. The Model 3 has an interior camera that could be used for this purpose, and indeed I hope Tesla does this in a future software update.
As far as lateral turn across path (LTAP) detection, I have personally witnessed my Model 3 react to that exact situation (gave a forward collision warning alert). Tesla may not advertise it because it's not officially supported or ready, but the beginnings of LTAP detection software are in there and will grow.
As far as lane-change without driver input, that's part of EAP that is feature-incomplete, but my very car will have it at some point.