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Okay, the air in the car, like the car is moving but the air in the car is staying put in the car. That doesn't make sense now that he said it out loud. Lincoln, maybe the driver bounced around on the seat at KP3JQQ. Okay, so I have a couple there in the air and I used to tell me about the seat belt. I'll have you come in and then begin with that and another was the tire. And Chris, you don't understand where you're coming from with that. I mean, the air relative to the inside of the car is moving. But it depends. Once you start, you turn left to right or speed up a bit. That air will be swashing around inside the car a bit. But oh, I understand what you're saying there. And then Scott, what was it you said? I didn't catch that. I was saying that the thing that moves the least amount would probably be the driver bouncing around on the seat. KP3JQQ. It's a driver on the seat. Got it. And this one here is actually the tire. And more specifically, it's the bottom of the tire. And as the tires are rotating, there's a point where they touch the ground. And it's where that point when they touch the ground, they've reached zero velocity in relation to the ground. So at that point, they're not moving until they start coming up again on the other side. So coming down, they've got a velocity once it hits the ground. And that moment, that very moment when it touches the ground in relation to the ground is standing still. And this takes time. And then that's part of the question. What part of the car is moving twice as fast as the body of the car? Guess that would have to be the top of the tire. KP3JQQ.