When I got the part, I tried to remember Batman as I knew him when I was a kid - with emotional recall.
I don't want to be Batman. Let Val Kilmer do it. I just want to be Uncle Batman. I have this whole 'warm relationship' plot in my mind. In the final scenes, the new Batmobile breaks down, the new Batman's stranded on the side of the road. We grab our old Batmobile, pick him up and drive away.