Okay, so have you heard about a car that can go on and on without needing to stop for fuel? It's called a range-extended vehicle!
Now, most normal cars use fuel, like gas or diesel or electricity, to move. But range-extended cars have a special system that makes them use a little bit of fuel to generate electricity that powers the car.
Think of it like this - when you have a toy car that needs batteries to move, you need to change the batteries when they run out of power. But what if you had a toy car that used a small generator to make new batteries while it moves, so you never need to stop and change the batteries? That's what a range-extended car does!
The special system uses a small amount of fuel to create electricity which powers the car's motor. This means that the car can keep going and going without needing to stop for fuel as often. It's like having a little helper that makes sure you never run out of energy!
So, in simple terms, a range-extended vehicle is a car that uses a little bit of fuel to make more electricity and keep it going for a longer time without needing to stop for refueling.