The Tokyo Motor Show, which opens to the public Saturday, is one of the world's biggest auto exhibitions and a place to show off global carmakers' research and development efforts and state-of-the-art technologies.
Since the last exhibition two years ago, cars have become more environmentally friendly and fuel-efficient, thanks to increasing worldwide awareness of global warming and rocketing oil prices.
But these are not the only changes the industry has seen. The territorial map of automakers has also been redrawn and analysts say further "marriages and divorces" are likely in the years to come.