(Reuters) - Mercedes are set to become the first team to win seven Formula One constructors’ titles in a row on Sunday but success is taking a toll.Team boss Toto Wolff spoke of succession planning at the Emilia Romagna Grand Prix on Friday, and acknowledged he could hand over the baton in the not too distant future for someone else to run with. “I’ve spent quite some time thinking about it and also involving the leadership within MGP (Mercedes GP) and we haven’t identified the structure for the future so I can’t tell you if it’s a year, two or three,” he said when asked for a time frame. Wolff referred to a previous “great handover of responsibilities” on the technical side as an example of how to retain knowhow and leadership while avoiding a bottleneck of talent. “Looking forward into the next few years it would very much make me proud to see a team principal coming up and taking over from me and doing a better job than I could have done at that time,” said Wolff. “This is a really interesting project for me and I don’t feel I would let the team down, I’m a shareholder and I will stay with the team.” The Austrian said he and Mercedes’ parent company Daimler had agreed on him staying in a different function such as CEO or chairman.