Japanese and foreign car manufacturers offered a glimpse of the future as they unveiled their latest eco-friendly and unique next-generation concept cars as the 43rd Tokyo Motor Show was opened to the media Wednesday.

The biennial event at the Tokyo Big Sight venue in Koto Ward, which will open to the public Saturday, features 426 vehicles from 178 firms, both up slightly from the 2011 event, according to the organizer, the Japan Automobile Manufacturers Association.

However, for the third consecutive show, the Detroit Three U.S. automakers — General Motors Co., Ford Motor Co. and Chrysler Group LLC — are staying away.