So he is human, after all. As on so many other occasions this year, Sebastian Vettel dominated the Canadian Grand Prix – but only for 69 and a half of the 70 laps. Under pressure from Jenson Button on the last lap, Vettel got momentarily off the dry line, flicked sideways – and that was all Button needed. “In lots of ways I was lucky today,” Jenson said, “but still it was a very sweet win – maybe my best ever…”

The unforgiving Circuit Gilles Villeneuve invariably throws up an eventful Grand Prix, but this one was something else again. On a day of appalling weather, the race started behind the safety car, and Bernd Maylander would take to the track on four further occasions before the afternoon was done. So overwhelming was the rain that, 45 minutes into the race, after 15 laps behind the safety car, it was decided to bring out the red flag.

Unquestionably it was the right thing to do, and the right time to do it. Soon the rain was ferocious, and it went on and on. By the time it eased, then finally stopped, the track was pretty well waterlogged. When the safety car led them away once more, for the restart, a little over two hours had elapsed since the halt.

As usual Vettel started from pole position, but on this occasion his margin of superiority was rather less than usual – less than a couple of tenths – and Fernando Alonso, on the front row of the grid for the first time this year, quite fancied his chances. “This was always going to be one of Ferrari’s best circuits,” he said, “because it doesn’t have any really fast corners, so our lack of downforce is less of a problem than usual…”

By the same token, Red Bull – whose cars are unapproachable in quick corners – expected Montreal to be one of their weaker tracks. “Of course I’m pleased to be on pole,” said Vettel, “but actually I’m a little surprised…”

Perhaps Seb was being a touch disingenuous. The Red Bull may excel on circuits where aerodynamic grip is all, but it’s not less than outstanding anywhere. Mark Webber qualified fourth – behind the two Ferraris – but when you factored in that he had missed Saturday morning practice because of KERS problems on his car, and then qualified without KERS, his time said everything about Adrian Newey’s latest sublime design.

The team which disappointed most in qualifying was undoubtedly McLaren, with Lewis Hamilton fifth fastest, and Button seventh. Hamilton won here last year, and hopes were high of a repeat, but on Saturday evening he glumly said that the car was ‘simply too slow’. Martin Whitmarsh conceded that probably McLaren had run too much wing, and consequently suffered on straight line speed; on the other hand, he pointed out, if it were – as forecast – to rain on race day, Lewis and Jenson might find themselves in the pound seats.

It didn’t quite start out that way, however. After four laps behind the safety car, the field was flagged away on a wet track – and at the very first corner Hamilton tagged the back of Webber, putting the Red Bull into a spin. “I think,” Mark drily observed, “that Lewis saw the chequered flag at turn three…”

They raced for only three laps before the safety car was out again – this time because the McLarens had contrived to run into each other on the pit straight, Hamilton trying to pass on the left, and getting squeezed into the wall. “I’ve apologised to Lewis,” Jenson said. “I honestly couldn’t see a thing behind me…” Hamilton’s brief, but eventful, Canadian Grand Prix was over.

The safety car was out for five laps on this occasion, and when they restarted, at the end of lap 12, Vettel immediately disappeared into his own race again, pulling out 2.5 seconds on Alonso in the course of a single lap. Webber, meantime, was working his way back through the field following the first lap altercation with Hamilton. It was announced around this time, too, that Button had been given a ‘drive through’ penalty for a safety car infringement.

On lap 17 Ferrari brought Alonso in for a change from wets to intermediates, and the team’s timing could not have been worse. Within a couple of minutes the rain began to come down hard again, and, as Fernando stopped once more, to take on more wets, out came the safety car again, this time simply because the conditions were adjudged too dangerous to allow racing to continue. After 15 laps of tooling round, the decision was taken to halt proceedings until the rain began to ease off.

The wait was longer than anyone might have anticipated – it began at 1.45, and it was not until 3.50 that the race was restarted, again behind the safety car, of course, for it appears that the days of conventional starts on wet days are now consigned to history.

When the race did get away again – on lap 26 – it was brief indeed, for Alonso and Button touched as Jenson tried to pass on the inside of a right-hander, and the Ferrari spun over the kerb, and was instantly beached. Safety car once more – and for Alonso no points from a race of which he had had such high expectations. As Button made his way to the pits to replace a punctured tyre, it was announced that the incident – like countless others on this day – was ‘under investigation by the stewards’.

Conditions remained extremely treacherous, and clearly they brought out the best in Schumacher, who was turning in the best performance of his unhappy ‘second career’. On lap 42 Michael passed Webber, and proceeded to close up on Kobayashi and Massa, who were scrapping over second place.

Unlike most drivers Kamui, at the time the race was red-flagged, had not yet made a tyre stop, which meant that he (and both the Renault drivers) effectively got the stop free, the tyre changing being done during the enforced break. He drove a typically spirited race in Montreal, but when at one point he moved to cover a move by Massa the effect was to slow both of them – and Schumacher, close at hand, took the opportunity to snick by into second place! Michael perhaps on the podium again…in the Mercedes pit they could barely contain their excitement.

By lap 56, with 14 to the flag, Vettel led comfortably from Schumacher, who was fending off Webber, then Button, Kobayashi, Heidfeld and Massa. Out of the second turn Heidfeld ran into the back of Kobayashi’s Sauber, and damaged his front wing – which then broke violently enough to lift the front wheels from the ground: the Renault pitched into a wall, and out came the safety car again…

It was this incident which was to change the outcome of the race – and there was something else, too. The rules prohibit the use of DRS (the opening rear wing) in the wet, but now the track – or at least a ‘line’ round the track – was swiftly drying out, and everyone was on slicks. One wondered if and when Charlie Whiting would use his discretion to enable DRS again. It would not be long.