I fully understand Brian's point but i do have to say that having done the M6/5 to Bristol area from north of Glasgow area twice just recently I would have LOVED to have a system which would deal with the sections of those motorways where there is a 50mph limit where the traffic is constantly varying in speed between 10 - 50mph. THAT is NOT a driving experience I want to have!
Why the 37mph limit on the D5 I wonder?

To be fair, just having adaptive cruise gives you most of what you need in that situation.

I don't know what the various Audi (D3, D4 etc.) iterations do, but in our Volvo once you actually come to a total stop for more than about 10 seconds it will not move off again until you press the throttle or resume button on the steering wheel. But in varying speeds on a motorway it's great, just a little steering input occasionally. Huge stress reduction. +++

D4 re-starts more gracefully than my old mans V60, but less so than the XC90 - but agreed, in the main it is all you need.

I actuality got car sick last year driving on the M62 over the pennines in an ACC D4, stop start traffic in fog! I wonder how often some Tesla drivers vomit :ROFL:

That is interesting Paul.
I have used CC on various vehicles for many years.
ACC only on a few VWs.
Have never been uncomfortable but do prefer ACC.

I think the difference between Tesla and Audis new system is number of sensors used, possibly the power of computing unit and use of AI in audi.

I understand Tesla uses 1x radar, camera ( not sure if just one or several) ultrasonic sensors and GPS.

Audis latest tech includes, 5 radars, laser scanner ( I think 1st for series production car), 5 cameras, ultrasonic sensors and GPS. All of that data need huge computing power.


AI is allegedly used which means it learns itself so does not need to pre-programmed with a solution for every possible situation, I guess this happens on test vehicles that gather data rather than customer cars and than the resulting software is used in production cars. On one side it is great on the other you don't ever really know for 100% what the car will do because software has learnt itself and was not pre-programmed.

If you wonder why odd number than it's because Germans do it in km/h and 37mph is ~60km/h. I guess it could be limited by how fast processing unit can handle input from all those sensors.