Head-up displays are available in a relatively mid-range BMW 3 series from over 10 years ago. It's an option you have to pay for, but so will these lights be.
1.3 million mirrors is actually low-resolution by modern standards.
Essentially, a camera system can detect surrounding vehicles and selectively darken the lighting around them. It means you could effectively always run your high-beams since the vehicles around you won't be blinded.
Heads-up displays were available in cars at least as far back as the 1990's. Perhaps earlier.
These days, you can get an app for your smartphone that doe the same thing. You just velcro the phone to your dashboard under the windshield and the backwards HUD is reflected in the glass.