CGX car nut:

Musk must not like repeat customers. 

Right lol. 
Curious how it will be. They will offer it as a subscription soon as well. I wonder if my standard autopilot will also stop using the radar. I’m assuming at some point it will. 

The obvious reason I see for not using radar is that when using the radar as a sensor they mostly need to ignore it for oncoming traffic on two lane roads etc.   Most of the time I would bet the radar information takes up processor power and is mostly of no use or needs to be eliminated.  The AI is using just video input and I doubt it has any radar info awareness.