Nah. This does NOT exist and is actually a reason for me NOT to buy a Tesla. This is a feature frequently found on European, but not on American cars. As per the description of Volvo:

 

"A speed limiter (SL) can be likened to a reverse cruise control - the driver regulates the speed using the accelerator pedal but is prevented from accidentally exceeding a pre-selected/set maximum speed by the speed limiter."

 

In addition there is:

"The Automatic Speed Limiter (ASL) function helps the driver to adapt the car's maximum speed to the speed shown on the road signs."

 

 

It is intended NOT to be a permanent setting to prevent your kids or yourself from goi g faster than, say 200km/h. But a dynamic one. 

You drive in the city, set it to 50km/h and never ever have to look at how fast you're driving. Can always go full speedy, but never exceed the speed limit, but still stay in control, rather than the car like with TACC. 

You reach a speed reduced area... you dial down to 30km/h... again you're safe. 

 

Europe is full of speed cams... and even my Renault Zoe has this feature. I never drive without it. And never have to worry to be faster than the posted speed limit. If this is not implemented in the Model 3, this one feature alone would push me to rather buy a Polestar, as driving with having to constantly look at your current speed... and going slightly up and down is a complete no-go for me.