The frenzy continues in Canada

Sebastian Vettel and Mark Webber sat down with the press this morning looking tired after what has been pretty much a 12 day interrogation. "What happened happened, let's move on..." Vettel must have said a dozen times. But he and Mark still agree to disagree over who was at fault.

Helmut Marko aside, most people who have seen the footage agree that Mark Webber did nothing wrong and the accident was caused by Vettel moving right too early. But Vettel denies he did anything wrong, and refuses to apologise.

"Looking back, I wouldn't have done anything differently," he told the damp media. "You can look at [the crash] many times, from every angle, and everyone has their own opinion."

"So do you blame Mark for it?" asked one reporter. "I didn't say that, did I?" came the tetchy response. "I did what I did and it didn't work."

"I'm cool. Totally over it," shrugs Webber in his interview session. He will get over it, but I'm not sure he is yet. But by collecting 15 points with third at Istanbul Park, things could have been worse for the Australian. "I've certainly had tougher days than Turkey. The next day I woke up feeling sore for the team rather than myself," says Mark.

Contact between Vettel and Webber certainly added excitement to this year's already riveting campaign. It also gave McLaren a taste for blood.

They were on pace with Red Bull in Istanbul Park and Montreal will suit them. The long straights and tight turns will play into the hands of the F-Duct-packing McLaren, while the Red Bull RB6's superior downforce will have little chance to show its worth.

The Canadian Grand Prix is pretty much guaranteed to provide a thrilling, unpredictable race. Its canyon of wall and barrier-lined corners and high brake wear see many a champion-elect tear a side off their car with the concrete, and safety car periods are guaranteed, bunching the field up and leaving victory in sight of the underdogs. The result in Canada is so often a surprise.

With five different winners from seven races, this season is utterly unpredictable and it could well be we see a sixth winner on Sunday: Felipe Massa's Ferrari has the ability to win here, as does Robert Kubica who took his single win here in 2008 for BMW and has brought Renault to within a sniff of victory already. And then there are the Mercedes of Michael Schumacher and Nico Rosberg.

The last race showed how critical fuel consumption is, as some drivers - Webber and Lewis Hamilton in particular - were forced to back off to save fuel, letting their team mate nip at their heels. Canada's stop-start nature is particularly punishing on fuel economy.  

So we've got battle lines drawn between team mates, as many as six drivers in the title chase, Ferrari and Mercedes desperate to get on the pace, and former winner Kubica draining every last drop from his Renault. Canada should be a corker.