KAMINOKAWA, Japan — Japanese automakers, once hailed as electrified-vehicle pioneers but derided of late as reluctant laggards, are finally getting their heads into the global EV game.
The effort begins now, with one of the country's biggest automakers and one of its smallest lifting the curtain on secretive EV manufacturing hubs that reveal the automakers' innovative thinking about how to make EVs profitably.
Nissan Motor Co., an EV leader a decade ago that was quickly surpassed by international rivals, is firing up a completely renovated plant to churn out new EVs this winter. And low-volume Mazda Motor Corp. has designed a new line to roll out electrified vehicles.
The factory updates — costing hundreds of millions of dollars — indicate that Japan's players intend to use their world-renowned expertise in lean manufacturing and creative continuous improvement, or kaizen, to compete in EVs.
The production tricks used…