Toyota, Honda and Nissan are among major players in an increasingly confident global car industry unveiling new models for the recovering U.S. market at the annual North American International Auto Show that opened Monday.

Manufacturers from Asia, Europe and the United States are showcasing more than 50 new vehicles making either their world or North American debuts, with many highlighting environmentally friendly models, at the Detroit event, one of the world's biggest auto shows.

Focusing on concept cars and advanced technologies such as plug-in hybrids, Japanese automakers are expected to showcase their continued recovery from the 2011 earthquake and tsunami. The disaster triggered supply chain disruptions, leading to shortages of cars in the U.S.