[synclastica_86]

I don't mean to read into this too much, but with a physics background, I just can't resist.

Lasers are monochromatic; hence, they consist of light of a single wavelength. White light, on the other hand, are made up of continuum photons. As said in the link in the OP, the bluish monochromatic laser is converted into white light using some crystal. This means that the light that actually emerging from the lighting unit is not actually coherent. While it's true that the diode itself can be smaller than LED, the entire package including the conversion crystal is likely to be larger. The only advantage left seem to be efficiency. But let's bit forget, LEDs can also be made to be more efficient, and the quoted efficiency factor of 1.7 doesn't seem to be difficult to reach. Hence, I really don't get the point of having laser headlights.