But one thing that he took issue with was any suggestion that IndyCar was a "retirement home" for former F1 drivers once they'd finished in Grand Prix racing.
"To be honest with you, I don't think we should say that IndyCars is an after‑F1 thing. I think IndyCars are a great series, and everyone should consider trying that," he said. "It would be wrong to think, okay, we're going to do IndyCars after F1. You can do it before in a way. [Juan Pablo] Montoya did it that way, for example. I think the series are very good for that. It's a very competitive one."
With the hype of the press conference behind him, the reality of what he's let himself in for will be dawning on Rubens this weekend: in just three weeks time he'll be on the streets of St Petersburg preparing for the first event of the 2012 IZOD IndyCar Series. It'll take all his experience and talent to be ready in time - and a truck load of help from Kanaan and the rest of his new US racing family.
"Even flights, for example, how do I get myself into this place or this or that?" he said, suddenly realising just how very much his life is going to change from the mad but now-familiar whirl of weekend Grand Prix venues.
It's going to be a whole new world for Rubens Barrichello. And clearly he can't wait.
"I love what I do. I love the sport, and I love the speed, so myself behind the steering wheel, I just feel at home," he said. "To be able to compete with Tony Kanaan, who is my brother from a long time, on a team that he already put it up to a different level last year, and with me coming and obviously with EJ [Viso] as our teammate, I think we're going to be able to put the team to a different level again."