In this episode of Cammisa’s Ultimate Lap Battle, Randy Pobst sets a new production-car lap record at Sonoma Raceway — and Jason Cammisa explains how it all happened. This is a battle between the 2026 Chevrolet Corvette ZR1 (ZTK), the Ford Mustang GTD, and the previous Lap Battle champion, the 992.1-chassis Porsche 911 GT3 RS. Ultimate Lap Battle doesn't just show you who's fastest, it explains how. We strap SCCA Hall-of-Fame race-car driver Randy Pobst behind the wheel of three of the fastest t