It appears that the reason for the failure of the Andretti F1 Team to join the racing circus lies not with the project, but with a specific individual.
During the Grand Prix in Las Vegas, many leading international publications report that a deal is close to being struck to announce a new team. However, not in the form we expected. It seems that Michael Andretti's intensive activities have not been liked by many, but his step back may pave the way for a new American team. The fact that one of Andretti's main sponsors was Mohammed bin Sulayem, who is famous for having bad relations with... everyone, may have also played into the equation.
Now, however, General Motors seems to have taken control, building on Andretti's existing infrastructure. More importantly, they have a status accepted by other Formula 1 participants. Their European centre at Silverstone is up and running, the team of experts is shaping up nicely, and the plan is for Cadillac and Andretti to also take part, albeit with less emphasis.

GM, meanwhile, has already begun its own F1 engine program, with the first working power units reportedly coming in 2028. That would put them on track to launch as a partner team in 2026, with Ferrari or Honda likely in the mix. It all sounds very exciting, and given recent times, we’re the closest we’ve come to seeing the dream of a new Formula 1 team become a reality.