Adrian Sutil thinks he still has plenty of room for improvement following his race-leading performance on his Formula 1 return in Australia.
The Force India driver led the middle phase of the Albert Park race, but lost places late on when he suffered high degradation on the super-soft rubber.
Having spent a year out of F1, during which he was convicted for his part in a night club brawl that took place after the 2011 Chines Grand Prix, Sutil was surprised in the way he has got back up to speed so quickly.
When asked if he had expected to get back into the swing of things so fast, Sutil said: "Normally you expect it takes a little while. Maybe a few races.
"But I still believe I can improve myself. Here in the rain I wasn't feeling so comfortable, and that's where you really need to be one with the car. In the dry it's a bit easier to adapt to it. So there's more to come. I've proved a little bit."
Sutil is convinced that being out of the sport for a season has actually helped improve him as a driver.
"I think my advantage is having been away a little bit, and lived a normal life," he said. "It's such a stressful sport sometimes; you just have no time to learn. So I believe I learned a little bit more. I was able to come back at a good level and [I am] probably able to step up a little more."