When Nate was about the age that Quinn is now, whenever I went through the car wash I would have to extend my arm back to his car seat so he could grasp my hand or fingers. He hated the car wash, and it scared him, but he would endure it (with some distressed squeaks) as long as he could hold on to my fingers.
And now, there is THIS! (Oh, the expression!) At the end Quinn says, "I'm not scared. I'm happy." But if you pay attention to his face and all of the thoughts and emotions flitting across it, I think he was a bit scared and was working at convincing himself that he wasn't.
This just tugs my heart, and brings back those occasions with Nate, grasping my fingers, as we rolled through the car wash. Poor little guy.