They talk about it as a software change, so I’m guessing they have no plans to do that.
There’s a company that does that locally called Bedbug Barbecue. Their logo is a dog cooking a bedbug on a grill. Well, they opened in a building that held a bunch of cheap restaurants over the years and for the first few months I just assumed they were the worst named restaurant in town.
I think the goal is less a matter of completely sterile and more a case of preventing the viral load in the car from rising continually over the course of days.
That works for the surface and they already do a lot of that, but cars are three dimensional spaces and heat can readily reach places that manually applied disinfectant won’t.