Fastback

Okay, imagine you have a toy car, and you noticed that some toy cars have a different shape on the back. Those toy cars that have a shape that goes down quickly from the top of the car are fastbacks!

The same thing happens in real cars. When a car has a fastback shape, the roof of the car starts high at the front and then quickly slopes down towards the back. This makes the car look more stylish, but it also helps the car go faster because the air flows over the roof more smoothly.

So basically, fastbacks are just cars that have a special shape that makes them look cool and go faster!