The Biden administration cut a $7 billion check on Friday to launch its vision for a hydrogen-fueled future.

The money augments $40 billion in private investment to build seven hydrogen hubs across the nation that will decarbonize transportation and industrial manufacturing, slashing 25 million metric tons of carbon dioxide emissions each year.

The amount “roughly” equates to removing 5.5 million gasoline-powered vehicles from the road, or just under 2% of the estimated 286 million operational cars in the United States.

After calling climate change “the only existential threat to humanity” during a news conference in Philadelphia, President Joe Biden touted federal infrastructure spending as the key to reigning in greenhouse gas emissions and transitioning away from fossil fuel reliance.