A CD-ROM-based GPS automotive navigation system became an option in the U.S. Added safety features included front side airbags, vehicle stability control and in 2000, brake assist.[1] Introduced low beam HID headlamps. The headlights were also equipped with a programmable delay feature for proximity illumination.[55] In February 2000, the limited "Platinum Series" LS 400 was introduced at the Chicago Auto Show in partnership with American Express.