Jamie doesn't seem entirely reassured by that smile, and his expression reflects that. However, he decides not to press the issue for the moment.

"Aye, well. That's not unusual, with the Doctor," he says with a shrug. Danger does seem to lurk around every corner when you travel with him. It's part of the excitement.

Speaking of which, Jamie is climbing in through the door practically before Billy gets a chance to get it fully open. Settling into the seat, he turns to investigate the window. He likes propping his elbow up when it's possible, and doesn't see any issues with doing so while they're flying. He's not really thinking that the car might be able to go fast enough that it'd be a problem.

"Hey, can I open this?"