No prizes for guessing what has got Sky Sports F1's Ted Kravitz and David Croft talking ahead of the Singapore GP - Kimi Raikkonen's 2014 return to Ferrari.
"And do you know what - he will raise his game, because he can."
CS: McLaren tried this, two World Champion drivers, and they won a third of the races but no championships...
DC: "But that was different at McLaren. [In 2007] McLaren had a young rookie in Lewis Hamilton, and Fernando Alonso. The young rookie was meant to be subservient and Alonso thought he was the 'lead' driver. Ron Dennis and McLaren had other ideas.
"At least now Fernando Alonso knows where the playing field is and where the dimensions are on this one. He knows that he's not a lead driver, he knows what to expect from Kimi Raikkonen. There will be no surprises, that's why there won't be a problem."
CS: One last word to Ted...
TK "Fernando Alonso not a lead driver? What are you saying? He's the most lead driver in the field. I think he's going to be giving Kimi Raikkonen as hard a time as Kimi is going to be giving him.
"Plus, I think another problem why they might not win the Constructors' Championship is because they are a little bit behind on engine development for next year. We believe Mercedes and Renault have the edge, at the moment, on an engine formula which is what it's going to be next year. I think we could be looking at Ferrari now not winning the Drivers' Championship, because they've got two number one drivers going against each other which doesn't work, and not even winning the Constructors' because the car's not up to it because the engine isn't up to it."
