Schwarzenegger has been leading the push for more environmentally friendly cars, by imposing tough standards on all new cars sold in California.
Others attending the announcement Tuesday will include officials from the Department of Transportation, which is tasked with handling the new CAFE standards, and from the Environmental Protection Agency, which will handle the new greenhouse gas emission standards.
Environmentalists say the technology is already there to make cars to meet the new requirements. As evidence, they point to Japanese cars that already exceed these standards.
"The American manufactures know how to do it. They can and they will. This is going to force them to do it," Becker said.
Consumers will still be able to choose what kind of car they want to drive -- but those cars will just be fuel efficient.
"All companies will be required to make more efficient and cleaner cars," a senior administration official told ABC News. "We did that my proposing individual standards for each class size of vehicles. This has the affect of preserving consumer choice, you can continue to buy any particular car you'd like."