The success story continues: With over 30 entries, the IMSA GT3 Cup Challenge by Yokohoma enjoys the status as the largest US one-make race series. Participants contest the “Platinum Class” for the latest 911 GT3 Cup and the “Gold Class” for older models. Two races each over 45 minutes are contested per weekend. The GT3 Cup Challenge by Yokohoma makes a guest appearance at the Formula 1 in Montreal. In 2011, the 15-year-old driver Madison Snow secured the Gold Cup, making him the youngest overall winner in the history of Porsche’s one-brand championships.