It’s an exciting time for green cars at the 2015 Tokyo Motor Show, and proof — if any more was needed — that the Japanese auto industry (like the American one, and, somewhat reluctantly, the German one) sees electric cars (and also fuel cells) as the wave of the future. The trend should continue at the Los Angeles show next month. I’m totally blown away by the Nissan IDS Concept. Nissan is an electric car…