Paris A YEAR on from the shock fall of boss Carlos Ghosn, the Renault-Nissan vehicle alliance is bent on a reboot to leave behind the upheaval and dust kicked up by the affair. The giant task falls to new board chairman Jean-Dominique Senard in the context of the car industry as a whole racing to meet huge new challenges. Ghosn revelled in taking the two partners to the forefront of the carmaking game. A total of 10.76 million vehicles sold last year along with ally Mitsubishi Motor put the trio ahead of Toyota and Volkswagen. But this year saw volumes slide back again below those of both rivals. The demise of the authoritarian Ghosn following his arrest on financial misconduct charges lifted the lid on an empire riven with internal conflict as he straddled the chairmanship of three companies, concentrating all power in himself. "The unity of command masked the incredible diversity of forces at work. When that exploded it liberated them," says one highly-placed official within the alliance.