To me, that's the cosmetic interpretation. I'm thinking more along the lines of a functional interpretation, given that Elon is framing it as 'massively enhancing human driving ability.'
To add context to my original post, I'm looking at this from an aircraft design standpoint (which would also fit within the Iron Man reference). How do you enhance the maneuverability of an aircraft? You make the design aerodynamically unstable. When taken to an extreme, you end up with an aircraft that's basically impossible for even the most skilled human to fly. The solution? You 'augment' human ability through the use of software flight control laws. The system, through the processing of sensor input, maintains stable flight via constant tiny adjustments (40Hz+ in some cases) and all pilot inputs are fed through the system as, essentially, high level commands (e.g. roll right at rate X, where X would be defined by the amount of pressure applied to the flight stick). When input is received from the pilot, the flight control system calculates and executes all of the necessary control surface adjustments in order to complete the desired maneuver without departing controlled flight.
Now, take that concept and apply it to performance cars. We already have a little of this in the form of drift control modes, active stability control, and similar stuff, but it's pretty limited/primitive in comparison.