I agree, the old guy's face is too placid. His mouth should be open and his eyes should be squinting a bit as if he's trying hard to listen. I prefer the hand behind the ear than the megaphone thing. Ask Secco to pose to get the perfect expression. You should add a frantic looking old woman in the passenger seat! We're not all old guys, you know! There are old gals, too! I'm as nutty as you are with Minis!