That's rather surprising because pretty much everything you are asking for is already available in Tesla cars (it has been in mine for quite a while).
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Will a Tesla (or any car) really prevent you from running your car into something if you try to?
I think what the comment was about would be trying to park your car and as soon as your bumper is 6 inches from theres, stopping you completely. If you push down on the accelerator, nothing would happen. Inertia aside, it would be impossible to hit another car.
>Will a Tesla (or any car) really prevent you from running your car into something if you try to?
I guess it depends on what you mean by "try to".
I drive a VW; if I'm inching out of a parking spot, it will automatically stop the car if it detects traffic. I suppose I could tromp on the gas at that moment and blast out into oncoming cars, but I'm not sure why I'd want to...
Same with catching up with slow moving traffic at highway speeds. It will detect the vehicle (or object) in front and apply the necessary braking pressure. The slower the object in front is moving, the faster it will apply harder pressure (and flash a warning to apply the brakes manually).
Essentially, if you don't react, the car will. You can then override it.
I know first hand that my car will not prevent a crash if I press on the gas pedal near an obstacle (that's how I hit my garage wall).
The GP was asking about a scenario of stop and go traffic (if I understood it correctly). I've used autopilot on a couple of occasions on I-5, and indeed, my car stopped when the car ahead did, then it resumed when the car ahead moved forward, maintaining distance and keeping lanes.
It's a different use case from the one you are describing.