Dave doesn't answer John. He just presses his cheek against the glass, kind of shrinking into his seat. He doesn't know what to do in this situation. Dave wanted to make a statement about how its impossible to know whether someone would be bothered by his appearance or not, but it was a sore subject. He wasn't going to talk about it unless he was made to talk about it.

By the time they arrived and John had parked, Dave had shrunk into his seat. He definitely looked more like a child like this. It was obvious that Dave had no way or intention on playing off that he wasn't this guy that John was talking about. He had no way to deny the claims and have any proof of it either.

"It's been five years. We've grown up."