Red Bull team principal Christian Horner says Max Verstappen is free to let off steam in other motorsport series, but reaffirmed that the Dutchman’s “focus has to be” on Formula 1 following a secret test at the Nurburgring last week.
Verstappen drove Emil Frey Racing's Ferrari 296 GT3 car during a test at Nurburgring's Nordschleife at an official Nurburgring Endurance Series test, and Verstappen snuck into the running under the pseudonym of "Franz Hermann".
