:General Motors plans to enter Formula One with its Cadillac brand in 2026 after announcing on Monday an agreement in principle with the Liberty Media-owned sport. Hailing a landmark move to become the 11th team on the starting grid, the carmaker said it had also registered with the governing FIA as a power unit manufacturer to become a full works outfit by the end of the decade. They will be the first new team since U.S.-owned Haas debuted in 2016 and GM the sixth engine maker after Audi,