Yamamoto, 28, first replaced Bruno Senna at Silverstone, and has continued with the team in place of Karun Chandhok from the following race at Hockenheim, but Chandhok recently revealed he expects to compete in two races towards the end of the season.
But Yamamoto is so sure he will drive the remaining races, he told a Dutch website: Ã¢â‚¬Å“I will finish the season. Whether I replace Bruno or Karun, I don’t know. But it is certain that I will do all of the races. The team is deciding which of them will drive. But my position is in no doubt.Ã¢â‚¬Â
HispaniaÃ¢â‚¬â„¢s fourth driver Christian Klien is also hopeful of getting a drive with the team after principal Colin Kolles hinting at the possibility earlier in the season.
Speaking about his omission, Chandhok said: Ã¢â‚¬Å“The reasons seem fairly obvious but at the end of the day, the team has its reasons, financial or circumstantial.
Ã¢â‚¬Å“I think I will do two or three races before the end of the year but honestly, our focus has now shifted to 2011.Ã¢â‚¬Â
Since being dropped, Chandhok has spent some of his race weekends with the BBC as a commentator alongside his commitments for Hispania. He is also scheduled to drive Red BullÃ¢â‚¬â„¢s show car round the new Korean International Circuit in Yeongam this weekend – he will be the first Formula 1 driver to do a lap of the new track ahead of the inaugural Korean Grand Prix in October.
MORE: The latest football news
MORE: The latest tennis news