Audi has been using the laser lights on their LMP cars for a couple years now.
http://www.audi.com/com/brand/en/vor...high-beam.html
We looked for better lights for the Viper GTLM cars, and the best we could find was the Hella Xenon and Led setups. We tested them all, and ran a combo, that varied depending on the track reqts.
http://www.hella.com/hella-com/620.html?rdeLocale=en