A car engine starting Shrunk in an airport chapter 4 by Louka31

Suddenly, you feel a slight thud followed by the opening and closing of a door and the sound of an engine. If you didn't know any better, you could swear that you're in a moving car. You feel more disoriented and bewildered with every passing second.

"What is going on? Why am I in some dark place with soft materials in a moving car?" you think to yourself.

You briefly think that maybe you're in someone's luggage, but chuckle to yourself and quickly dismiss the thought as being ridiculous. You have no idea where you are but you convince yourself that wherever it is, you can't possibly be in someone's luggage. First of all, it would require being shrunk and you know that there's no way that could happen to you. You remind yourself what your science teacher said to your class in high school after someone brought up "The Incredible Shrinking Man" in biology.

"If a human were ever that small, they would die within seconds due to the air molecules being too large to breathe." you remember her saying.

With your mind at ease, at least for the moment, you lay down on whatever soft material you're on and try to relax. You aren't able to relax for long. After 15 minutes, you feel what you're certain is a car stop. You again hear a door open, followed by a sudden and violent jolt. You hear the door close and if you didn't know any better, you'd swear that you were being carried. You feel a sudden swaying motion accompanied by footsteps. To you, it feels more and more that you're trapped in a luggage of some kind, but you refuse to believe it since you think it's impossible. Suddenly, something happens that makes it even harder to deny the evidence at hand.

What do you hear?