Winning in the States was just an incredible feeling. 

I love spending time there and it's fantastic to see how much the sport is growing. I was just blown away by the support I had all weekend, which made the win even more special. 

Once I got ahead in the race there was no looking back and I still can't quite believe the run we've had recently. The team are doing an incredible job. 

Next up, of course, we have Brazil - which is another very, very special place for me. In 2008 I needed to finish fifth or better to take the title and, until the very last corner of the last lap, I was running sixth. I passed Timo (Glock) down the inside and, as I crossed the line, I didn't know if I'd done it or not. 

I honestly though I'd lost it until quite a while after the flag, when the team came over the radio to tell me I'd won the World Championship. That was an incredible emotional rollercoaster and a moment that will stay with me for my entire life. 

My record at Interlagos hasn't actually been the best so far in terms of results, though, with only one podium all the way back in 2009. I'm hoping this weekend will be the one to change that.