Sebastian Vettel has delivered not only impressive speed for Ferrari but has helped calm its political situation behind the scenes, says his team boss Maurizio Arrivabene.
The four-time world champion has put Ferrari back in the winner's circle this year with victories at both the Malaysian and Hungarian Grands Prix.
But it is not just the on-track triumph that has left Arrivabene a happy man, because the way that Vettel's personality has impacted on the staff back at the factory has been just as vital.
"The team is getting on very well together," explained Arrivabene. "He [Vettel] brought to the team a lot of enthusiasm.
"Many times he has helped me to make sure that we are getting together and, most importantly, he is co-operating very well with his teammate.
"This is the reason why, when I was explaining of the confirmation of Kimi [Raikkonen for 2016], that we are looking at the moment of the stability of the team.
"Seb is a fantastic champion but is also a person who is helping to stabilise the team together with Kimi. And is helping a lot for all of us to do that together.
"You saw after the race [in Italy]. You look at Seb. He is always smiling and positive and then I become a bit more flexible when I have to complain."
No Alonso comparison
Although Vettel's infectious positivity is in contrast to the way Fernando Alonso's final spell at the team appeared to pan out, Arrivabene declined to compare them.
"For sure I don't want to talk about Fernando," he said. "I met Fernando when I was not doing this job and we have a good relationship.
"I don't want to talk about him. I talk [only] about my drivers and I am perfectly fine with them."