This book is about the Geronimo Stilton chasing a car SOLAR: The car of future and it is chasing a another car whose name is LUNAR : Is the rival of the car Solar. Solar is good and lunar is bad solar was the car of the PROFESSOR VON VOLT and it is fully automatic and fully auto driven also it can talk also. It sketch was stolen by the Carlotta Carr was the owner of the lunar car. First Carlotta Carr was the working in the company of the PROFESSOR VON VOLT at that time she stolen the sketch of Solar . At last she was found by the solar and GERONIMO STILTON Solar colour is golden yellow and colour of lunar is silver.