The Nürburgring 24 Hours is a 24-hour annual touring car and GT endurance racing event that takes place on a combination of the Nordschleife and the GP-Strecke circuits of the Nürburgring in Rhineland-Palatinate, Germany. From Wikipedia
The F1 champion revealed he broke the GT3 lap record during a private test under the pseudonym Franz Hermann and reiterated his goal of competing in the Nurburgring 24 Hours.