The president wants to use pollution rules to rapidly lift sales, but there are hurdles ahead.
The proposal being prepared by the White House is intended to begin grappling with a number of big issues that President Biden focused on during the campaign.
Building electric cars, and repairing them, will require a huge change for the industry and usher in a new automotive era.
The fuel could play an important role in fighting climate change, but it has been slow to gain traction because of high costs.