https://www.cnet.com/roadshow/news/gm-proposes-nationwide-zero-emissions-vehicle-standard/

GM says that the rules, if fully adopted, could put 7 million "long-range" electric cars on American roads by 2030, saving 375 million tons of carbon-dioxide emissions from 2021 to 2030.

Currently, California has a so-called ZEV mandate that requires automakers sell a certain percentage of zero-emissions (generally electric) vehicles within the state. Several other states follow those rules, too. The federal government, however, has proposed rolling back California's power to set its own rules with the California Air Resources Board (CARB).