Formula One newcomers Cadillac have shut down speculation about ousted Red Bull boss Christian Horner having a role in running the team.
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The General Motors-backed outfit, who are due to make their debut next season as the 11th team on the starting grid, appointed Briton Graeme Lowdon as their first principal last December.
Horner, who was the longest serving F1 boss and one of the most successful of all time, left Red Bull last month and there has been speculation about whether he will return and where he might end up.
Cadillac F1 team shuts down rumors about Christian Horner https://t.co/InBF8ib4fn
— ESPN 690 (@ESPN690Jax) August 26, 2025
"There have been no talks with Christian Horner, no plans to do that," Cadillac F1 chief executive Dan Towriss, who also runs TWG Motorsports, told reporters.
"So I'd like to officially shut down that rumour.
"Our support, belief, backing is 100 per cent in Graeme Lowdon."
Cadillac announced on Tuesday their first ever F1 driver line-up of race winning veterans Sergio Perez and Valtteri Bottas.
Mexican Perez raced under Horner at Red Bull before the six times race winner was dropped by the team, with two years left on his contract, at the end of 2024 following a woeful run of results as teammate to four times champion Max Verstappen.
As Red Bull boss, Horner took the team from also-rans to champions in the space of five years.
Lowdon is untested as a principal although the Briton was chief executive of the now-defunct Marussia team that was operated by Manor Motorsport.
Cadillac have recruited heavily from other F1 teams, including Red Bull and are already bigger than US rivals Haas.
The team have operations at Indianapolis, in North Carolina and at Silverstone. TWG, the motorsports entity of billionaire Mark Walter's TWG Global, also own Andretti Global in North America.