After his one- off appearances for Team Force India, the well- known driver Ralf Schumacher hinted on Thursday that he might put an end to his Formula One career.

The German driver left the Toyota team at the end of the season and is since then without a team. But he had a hard day at Jerez when he was testing for Team Force India.

"It's possible that that was my last drive in a Formula One car," Schumacher said, as he would rather quit driving in Formula One if he does not find a team with potential to be a part of.

The 32-year-old veteran driverr's appearance in Jerez was seen as his last effort to save his endangered career, the German media said.

However, the driver declared that he did a “friendly service” to the Indian multi-millionaire Vijay Mallya, the owner of the Team Force India that last year had the name of Spyker.

The Italian Vitantonio Liuzzi, one of the other five possible competitors for the two race drivers’ seats that were invited for testing this week, has outpaced Schumacher, who has left the circuit twice during the testing race.

In a different race, Ralf’s brother, Michael Schumacher, 38, took part in action testing for Ferrari, even though he retired last year. After he won the world champion title seven times, the driver was now the eighth fastest, as BMW Sauber Polish driver, Robert Kubica, was the fastest of the day, being ahead of Hamilton and Ferrari's Felipe Massa.