I think this would be one of those technologies which would never go mainstream because it looks much cooler than being practical. Nonetheless a brilliant idea from the bright minds at Audi to make our everyday driving tasks simpler and safer.

Adding lasers to fog lights isn’t just for visibility: Audi, in its infinitely Germanic wisdom, has decreed that this laser system shall project a line unto the actual road, and across that line other cars shall not pass. Or something like that. The projected laser line ends up at a safe following distance, and in heavy fog, the light refracts through the water droplets in the air and forms a large warning triangle.

[Dvice]