What event was held to celebrate Formula One's 75th anniversary?

For Formula One's 75th anniversary, a landmark event was held at London's O2 Arena where all 10 teams unveiled their 2025 liveries simultaneously for the first time. This historic gathering took place in front of 15,000 passionate fans who were proud to witness this significant milestone in motorsport history. The event marked an unprecedented moment for Formula One, bringing together the entire grid to showcase their new car designs on the same night, creating a collective celebration of the sport's rich heritage and future direction as it enters its 75th year.