Okay kiddo, have you ever seen a car that has a big door at the back that can go up and down? That's called a hatchback!
You see, when cars were first made, they only had doors on the sides and in the front. But then, some clever people thought it would be cool to add a big door in the back that goes all the way up. That way, you can fit bigger things, like suitcases or bikes, in the back of your car.
Hatchbacks are cool because they are usually smaller than other cars, so they are easier to park and drive. Plus, they are more fuel efficient, which means they use less gas than bigger cars. So not only are they cool, but they are also good for the environment!
So, the next time you see a car with a big door in the back that goes up and down, you can tell your friends that it's a hatchback, and how cool and fuel efficient they are!