I didn't fully understand what had happened until I saw the replay just now, but I gave him plenty of space, took the corner like I usually do and suddenly felt a big hit from behind. There was nothing I could do about it and that was effectively my race over. I wanted to retire the car early - not because I was giving up, but because I couldn't catch the people in front of me and even with a safety car I don't think I would have been able to pass them. 

The car was quite badly damaged and my thoughts were to preserve the engine after the last one was destroyed in Hungary. What happens next is not my call - that's one for the bosses to make. But I'm now almost 30 points behind in the Championship so that's the main thing on my mind. It's a big gap and it will be hard to recover from here. That's tough to swallow - but ultimately it's just been one of those days.