I googled a bit (and read the model 3 handbook) but found 1 source that said Tesla's forward collision warning does use radar.

Anyone more knowledgable know whether that's true?

I'm curious how much it's relying on object recognition via cameras vs. the more traditional radar based foward collision braking that are standard on "dumb" modern cars.

...or in other words, would a "dumb" modern car still fail in the same scenario?