Apart from having no idea why using laser would be beneficial for regular lighting purposes, I have to question the idea that brighter headlight is always better.
If we could have headlights as bright as daylight, but with a necessary sharp cutoff to avoid blinding the oncoming traffic, would that be an improvement? As our eyes adjust to the brightness, we will get to see everything inside the zone of illumination, and NOTHING outside. I don't think I want that.
I suspect this is all just a marketing BS.