There wasn't a moment where I got into cars. It wasn't a conscience decision or something that came later, it was there since I was born. I just love it.

It really depends on the director. I think quite often, it's not what you expect. The most serious film can be the most fun. The one that's supposed to be fun can be the most serious. I don't think there are any hard-and-fast rules. I just think it really depends on your director and what the general vibe is.

Yeah I was aware of the book, but hadn't read it. So as soon as I'd finished the script, I got a copy of the book and read that. My wife had read it and she loves it, so that was a good sounding board. I like her writing style, she's such a page-turner. I enjoyed The Constant Princess as well. I think she's great. The books are very popular with women and I can see why.

It only seems jarring when you look back on the work I've done. I think if you had to map that out at the beginning and you said, "Right, sit down, this is what you're going to be doing," you'd probably freak out. But I'm someone who really enjoys not being himself. So if you consider that, then it all sort of makes sense. And I just think that's the job of an actor. I guess that's the variation that you're talking about. It's probably a byproduct of just constantly looking for something different, because that's what I feel like I'm supposed to do.

I'm very much a bit of a ghost presence.

The thing I love about working with first-time directors is that it's always quite shocking how little difference there is between them and directors who've been directing all their lives.

I think you need to be able to see a lot of negative in things in order to extract material, so there's probably something to that. A lot of the people I used to work with were very, very, very unfunny offstage, so that's a pretty common thing.