Elon Reeve Musk -- Chief Executive Officer and Product Architect

Yeah. I mean, it'd be a massive improvement in driver fatigue because -- and driver safety. We've got sort of the anti-jack knifing software. You don't have to worry about your brakes overheating if you go down a steep hill because we generating that energy goes back and into the pack.

It's just like -- it's like radically better than a diesel is what the drivers love it.

Travis Axelrod -- Head of Investor Relations

Great. guys. Thank you very much. Our next question is when will Tesla incorporate X and Grok in all Tesla vehicles?