NÜRBURG, Germany (AP) — Four-time Formula 1 champion Max Verstappen led in a “frustrating” 24-hour racing debut at the famed Nürburgring track before his hopes were ended by a mechanical issue with his car Sunday. Verstappen had been leading in the morning by over half a minute, sharing a Mercedes AMG GT3 car with experienced sportscar racers Lucas Auer, Jules Gounon and Dani Juncadella. With three and a half hours left, Juncadella had just taken over from Verstappen when he had to slow down