Honda Motor Co. and General Motors will produce hydrogen fuel cell power systems in the United States beginning around 2020, the companies say.

The fuel cells could be used in autonomous vehicles, as well by ride-sharing companies, such as GM affiliate Lyft. He also said fuel cells could have aerospace and military applications.

The companies plan to invest $85 million to add a production line at a GM battery plant in Brownstown, Mich. The fuel cell production line will be partly automated and is designed to be scaled up if demand warrants.

Honda says fuel cell vehicles (FCVs) remained central to new-energy cars making up two-thirds of its line-up by 2030 from around 5% now.

Honda says it will eventually shift production of fuel cell power systems to the U.S. to cut costs.

GM and Honda each hold 50% of newly formed Fuel Cell System Manufacturing LLC. Their future FCVs will share the same power system from around 2020.