an LED device installed in an Audi R8 LMS to write light messages in the air that could only be seen on long-exposure photos. Collected using an app on various Audi Facebook fan pages, the fan messages were spread at one of the world’s most famous racing events: the 24 Hours Nürburgring. During the night phase of the race the best messages were captured on photos and then published in an online Audi gallery so fans could share them with their friends.