Adrian Newey has now reportedly handed in his letter of resignation from Red Bull. It first emerged last week that he intended to leave the reigning world champions. And now a German publication has claimed that Newey has formally resigned. They expect an announcement from Red Bull before the Miami Grand Prix this weekend. The 65-year-old is under contract with the team until the end of this year, and he won’t officially leave until then. It’s unclear at which point he’d be able to join a rival team, if indeed he chooses to remain in F1 rather than retire. That timeline will take on an extra i…
