Christian Klien has travelled to Abu Dhabi this week hoping to get another race outing with the Spanish team.
Without an official reason being given, the team's Austrian reserve driver replaced Japanese regular Sakon Yamamoto in Brazil and significantly outqualified team regular Bruno Senna.
His race was then ruined after his car stopped on the way to the grid, but team boss Colin Kolles praised his ability to "easily keep up with the other new teams' pace".
But Klien is not sure he will be back in the driving seat for the 2010 finale this weekend.
"I hope so, but I haven't even asked," he is quoted by Kleine Zeitung newspaper.
Klien is already thinking further ahead, and welcomes the news that HRT, to use a Williams gearbox in 2011, has a new financial investor. It is also believed that the basis of the team's next car will be the 2010 Toyota.
"In any case, the team will be an attractive employer for 2011," said Klien.