This book is about the importance of technical examination of cars and superiority of electric cars than gasoline cars in reducing air pollution.In this book, a new electric car enters the city and everyone is looking at it with astonishment. The air is polluted, and although no car is allowed to be in the streets, a gasoline car exits and chases the electric car and finds that it is electric, and they become friends. The electric car takes the gasoline car to a technical examination so the car feels better.

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