Sakon Yamamoto says he is unsure about his future with the Hispania Racing team beyond the end of the current F1 season.
Yamamoto joined the team as a test driver earlier in the year and was then promoted into a race seat for the British Grand Prix in place of Bruno Senna.
The Japanese driver has since replaced Karun Chandhok after Senna's return to a race seat, although an apparent bout of food poisoning then saw Yamamoto replaced by Christian Klien.
The former Spyker man will be back behind the wheel for his home event this weekend at Suzuka but he admitted he was unsure what 2011 may hold, with continued question marks about Hispania's plans.
“Still we don't know how I am going to do with HRT next year,” he said. “But we try to do our best and I am looking forward to working with them again.”
Yamamoto admitted that he didn't expect an easy weekend on home soil as Hispania hopes to do battle with rivals Virgin and Lotus for position.
“Well, my point of view regarding this circuit, sector one is one of the most challenging parts as from turn one to I think turn ten you don't have enough time or enough chance to drive straight,” he said. “You are always going right or left, so it is going to be very challenging. Also that's one of my favourite parts of this circuit, so in our limited situation it is going to be very tough to drive on that part but we try to do our best.”