With a quarter of the 2024 Formula 1 season gone, Carlos Sainz is still yet to resolve his future. He’s known since the winter that he was out of a drive at Ferrari after the signing of Lewis Hamilton. Sainz appears to be playing a waiting game amid vacancies at both Red Bull and Mercedes. But that carries a degree of risk. Sergio Perez is out of contract at the reigning champions, while the future of Max Verstappen is uncertain despite his long-term deal. That’s because of instability behind the scenes, exacerbated by the departure of Adrian Newey. Mercedes are one of the teams who have held …