There's a possibility they might have used manual focus here... that's how I shoot stuff like this.
I can tell you form experience there's a bit more to shooting F1 than having good access.
It's fairly easy to get standard on track shots, yeah. But to be honest that's just the tip of the iceberg when it comes to motorsport. Add to that client briefs, tight deadlines etc., and it's hard work.
I've covered GPs with an agency. I certainly didn't just sit in one place! It's harder than a lot races because you can't just drive your car around the track perimeter. For example, at this years British GP, I shot the start from Stowe, ran round to Club after a few laps, ran to Abbey for a few laps, ran to Luffield for the last few laps, ran to the podium for the... well podium... dropped my memory card off at the media centre, then back to the first corner for the start of one of the support race. Spent the whole weekend (thursday morning onwards) in media scrums photographing drivers, walking round the campsites photographing them, round the track photographing the various sessions, going to an airfield to do some promo shots for Renault, and more. So there's a bit more to F1 than you may think.
Not having a go kalibre, just a perspective from someone in the industry!
Anyway... this particular shot, I'm not a great fan, I think a slower shutter speed, more car in view, or a higher vantage point to get the car above the trees. So this one doesn't really work for a lot of people. I know the photographer in question though, and he is superb, and does some really good stuff.