Renault has made a comeback. It has closed plants, cut purchasing costs, brought out successful new products and returned to profitability. Chief Executive Louis Schweitzer must keep up the momentum in France while turning his focus to Nissan. Renault now holds a controlling interest in the Japanese automaker and has dispatched No. 2 lead Nissan's revival. Schweitzer was interviewed on October 26 at Renault headquarters in Boulogne-Billancourt, near Paris, by Automotive News Europe Editor Richard Johnson and Staff Reporter Stephane Farhi.