2. 1B parameter model to stay between two lines. Why. Waste of time. Their product hasn’t actually changed in several years because they will never advance past lane keeping SAE Level 2.

Maybe... you're answering your own question there?

I suspect for what they’re selling for $1,000+ these days, could you find a way to do for half? Less than that?

Genuine question: does anyone else anywhere sell something like this? An all-in-one retrofitable level 2 self-driving gadget?