It's funny, if you go back and look at all those old movies a lot of times they didn't have the budget for music. Each scene here was written to a different time, whether that be 'Breakfast in America' or just different soundtracks that we had for different parts of the movie. I'm interested to see how it all plays once it's all put together.

There is a shortage of hard R. It was the story and the character. He's never played a character like this and so that was the thing that really won him over. The story itself, on the surface - Patrick and I love actors almost in a geeky kind of way.

Nic is definitely a car guy because Nic and [William] Fichtner and Billy, these guys go on and on about the cars. So we had no choice but to do our research and get everything right because they were going to nail us if we didn't.

I mean, 3-D adds a whole level of 'oh my goodness' to the movie in good ways and bad ways that you have to deal with. We've overcome any obstacle that we've ever had because we have a great 3-D crew, Max and the guys at Paradise 3-D.

I would've never done a 1970's road movie. It just wouldn't have occurred to me. So when he started talking about it he brought up all these movies and he'll do that with you guys and you'll feel the Goosebumps as you start realizing the story that he wanted to tell.

We played more rock music when we were writing the script. 'Renegade'. All of the Styx songs. All of the old '70's and '80's music, that's the stuff that's pounding in the background while we were doing this stuff. It's a part of those movies.

That's where the inspiration was and so the more that you rewrite and the more you rewrite and the more the numbnuts are coming in to give you notes then the more problems you run into and the more it suddenly doesn't seem like the movie, the story, the characters changed, watered down and we don't have that with this.