I really don't see another driver dominating the rest of the season just all of a sudden. Even if Hamilton or Alonso do start beating Vettel now I think it's too late, he's got this one in the bag.
I'm really dissapointed in Webber. He is the only man with the equipment to challenge Vettel at the moment, yet he hasn't challenged Vettel once this season. Someone said that Karthekeyan wasn't trying or giving 100% in another post but I think this should be said of Webber. This guy battles to finish on the podium in most races with clearly the best car of the field. I couldn't believe he managed to qualify in 18th place at one stage - in a RED BULL!! =D>
He should be sacked immediately and Hamilton should take his place. That's the only way I see Vettel being challenged because he clearly has far superior equipment and a far inferior team mate!