original: it is one of the most historic motor racing circuits in the world .
simplifications: it is one of the most historic motor racing tracks in the world . it is one of the most historic motor racing circuits in the world . it is one of the most historic motor racing circuits in the world . it is one of the most famous car racing tracks in the world . it is one of the oldest motor racing circuits in the world . it is one of the most historic motor racing tracks in the world . it is one of the most famous motor racing circuits in the world . it is one of the most historic motor racing circuits in the world .