Tesla's electric cars are suddenly in hot demand after the company drastically cut the prices for some models by up to 30 percent, including federal tax credits.
For decades, economic theories and mathematical models were valued more than real-world evidence. But that has changed, and the impact on public policy will be huge.
Volkswagen, Mercedes and Honda are among the EV makers that have announced deals to build battery factories in the U.S. since the Inflation Reduction Act took effect.