Lets start with the fact that you already have a specific shape in your headlights. Typically, driver and passenger side headlights have different reflector and

Lets start with the fact that you already have a specific shape in your headlights. Typically, driver and passenger side headlights have different reflector and beam shapes and are aimed differently. Think about the need you have for each headlight, they aren't really the same. The outside (shoulder side/passenger side) realistically has a greater need for 'spread' to light the side of the road and see things that could potentially quickly intrude on your space. It also is less likely to blind oncoming traffic because it is pointed slightly outward so the beam can be higher and broader. The inside (drivers side) headlight has pretty much the opposite needs. It is still important to an extent to light the other shoulder but you also want to avoid blinding oncoming drivers and will probably use that to illuminate further down the road. With this you could, theoretically, do something like create a hole in the beam that is 'off' to not blind oncoming drivers and tracks their location while leaving the headlights at a higher and safer level that increases driver vision. Add in that as you speed up and slow down and corner as you drive in both directions. That is why many cars already have headlights that shift as you turn, this is just the next logical step