Topic summary
Taillight

Extracted from the Wikipedia article Automotive lighting.
Light-emitting diodes (LED)
The Maserati 3200GT, introduced in 1999, was the first production car to use full LED taillights. In North America, the 2000 Cadillac Deville was the first passenger car with LED taillights. The 2002 Kia Opirus was an early adopter of LED front turn signals. The 2007 Audi R8 used two strips of optically focused high-intensity LEDs for its daytime running lights. Optional on the R8 outside North America were the world's first LED headlights, made by AL-Automotive Lighting. The low and high beams, along with the position (parking) light and front turn signal, all use LEDs. The Lexus LS 600h (XF40) features LED low beam, position and side marker lights in North America, and the 2009 Cadillac Escalade Platinum used LEDs for the low and high beams, as well as for the position and side marker lights. The Mercedes-Benz S-Class (W222) used entirely LED lights, even in the most basic trim level.