SONOMA, Calif. (AP) _ Dario Franchitti fuelled speculation Sunday that change is on the way for Andretti Green Racing.

The addition of Danica Patrick next season after she parts ways with Rahal Letterman Racing gives the Andretti team five drivers and only four cars.

Patrick, Marco Andretti and Tony Kanaan are under contract, while Franchitti and Bryan Herta are in the final year of theirs.

``I think for sure all four of us will not be on the same team next year,'' Franchitti said after the Indy Grand Prix of Sonoma, where he finished second.

``I think Bryan has already chosen what he wants to do next year. It's kind of sad because we've built up such a good relationship.''

Herta has said only that he is talking to other teams.

Andretti Green co-owner Michael Andretti said he assumes both Franchitti and Herta are looking into other options.