Aug.21 (GMM/Inautonews.com) Although clearly the quickest team in F1, championship leader Mercedes is still pushing hard to improve its 2015 machine.

Sebastian Vettel broke through for Ferrari’s second win of the season in Hungary, ramping up suggestions he might still be an outside chance for the title.

“Well, as long as it is mathematically possible, then why not?” the German said at Spa-Francorchamps.

“Of course, I also know that the gap to Mercedes is still there, but it is also important to seize opportunities when they come, and I think there have been two so far.”

Marc Surer, a former F1 driver, said it is not realistic for Ferrari to be targeting the 2015 title.

“I always have the feeling that Mercedes has reserves when someone comes closer to them,” said the Swiss, who commentates for the German broadcaster Sky.

Red Bull’s Daniel Ricciardo agrees: “They (Ferrari) are in the situation we were in a year ago. The gap to Mercedes is still too big.

“On the tight and twisty tracks, Ferrari seems to be a little closer to them, but I think this weekend it will be a walkover for Mercedes,” said the Australian.

Nonetheless, Mercedes is still pushing hard to develop its W06 car, as pitlane observers noted a revolutionary rear wing waiting to be raced this weekend.

Italy’s Autosprint says the notably curved main plane resembles a silver “spoon”.

“Our rear wing is basically not new,” insisted Nico Rosberg, smiling: “But the curved element looks quick!”