Defending champion Dennis races for Andretti in FE, with the company announcing this week the opening of a brand-new hub campus at Silverstone, despite being turned down, for now, by F1 in its attempts to join grand prix racing.
F1 had doubts about Andretti's capability of being able to adapt to two new sets of technical rules and also doubted that it could add financial prowess or prestige to the championship - although the bid was not totally rejected outright.
A door was left ajar should Andretti's planned engine partner General Motors produce its own power unit for 2028, but its hopes of joining for 2025 or 2026 appear over.
Despite the rejection of its bid for now, Andretti is also ploughing ahead with plans to enter F2 and F3, and Dennis believes the team has earnt the right to compete in grand prix racing.
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Dennis talks Andretti F1
"I completely think that Andretti deserves every possible chance in Formula 1, they've won enough in other categories," Dennis told RacingNews365 at Misano.
"They're world champions in Formula E, champions in IndyCar, they've won many, many races and the budget is almost endless.
"We have incredible resources behind us, and now we're employing more and more people and are not too far off the employment that Haas has already - and that is just a quarter of what we want to achieve.
"Hopefully, if we keep pushing in this direction, keep showing what we can bring to F1, obviously they may reconsider in the future, but I'll be pretty old by that point.
"It is great to be a part of Andretti in this exciting time with the headquarters we're building in America and at Silverstone, it is seriously impressive and I certainly look forward to the future.
"It would be a competitive American racing team with a big engine behind it, and it is obviously something we are really pushing towards.
"I don't think there's anything quite like having two American brands working together in terms of building the car and the engine.
"I think it will be exciting for Andretti to come into F1 and they've got the space for it as well.
"They've only got 20 cars on the grid, and there is enough space for 11 teams."
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