Theissen wants swift SC rules change

Heidfeld received a ten-second stop-and-go penalty after pitting when the pitlane entry was closed during the safety car period.

The German driver was forced to pit in order not to run out of fuel, but the penalty sent him to the back of the field, destroying in chances of a good result.

It is not the first time something similar has happened this year, and the teams are already discussing possible changes.

Theissen is hoping the situation can be changed quickly.

"It's a lottery, you cannot plan for it," Theissen told reporters after the race. "You put up your strategy before the race and you can only hope it doesn't happen.

"We tried to call Nick in but it was maybe two seconds too late - he had just passed the pitlane entry so there was no choice.

"We could do another two laps and then we had to call him in. We knew it would be a 10-second penalty but there was nothing we could do about it. I know the team managers and the FIA are discussing this rule already and I hope they will come up with a solution soon.

"It would be good if we get something before these races (Monaco and Canada)."

Heidfeld went on to finish in ninth place, while teammate Robert Kubica had a better day and finished in fourth, right behind McLaren's Lewis Hamilton.

Theissen said the two teams are extremely close in terms of pace.

"Our pace was okay - I don't know if Ferrari had something in their pocket. If not, the three teams at the top have certainly come closer together.

"It was close. Due to the start, Robert went behind Lewis into the first corner and he went behind Lewis over the finish line, they both had the same pace and the same strategy, pitted on the same laps, so it's more than close."

He added: "Robert's car was not perfect as opposed to Nick's. initially, the start was very good and then he got some wheelspin under acceleration and we have to look into it - I don't know the reason behind it at the moment."