The F1 community has come together to pay tribute to Red Bull co-founder and owner Dietrich Mateschitz.
The Austrian businessman's death was announced under an hour before qualifying at the United States Grand Prix.
Mateschitz is one of the most important figures in F1 history, with the success of Red Bull only the tip of the iceberg.
A second team, sponsorships since the late 1980s and the nurturing of a number of high-profile drivers ensure Mateschitz's legacy will remain in F1, as well as in every other sporting and societal area he impacted.
A collection of tributes from social media can be found below: