For years, Toyota has pushed hydrogen fuel cell vehicles as the advanced automotive technology to look out for. Now they are saying they are in the “production engineering” stage of building an electric vehicle (EV) battery with a solid electrolyte.

For years, Toyota has pushed hydrogen fuel cell vehicles as the advanced automotive technology to look out for. Now they are saying they are in the “production engineering” stage of building an electric vehicle (EV) battery with a solid electrolyte.