The credit currently applies to the first 200,000 cars sold by any given brand. GM and Tesla have already reached the 200,000-unit mark, while both Ford and Toyota could hit the cap this year. This doesn't affect state-level discounts. The companies hope Congress will replace the unit-based cap with a sunset date that would end the credit once the EV marketplace is"more mature."
It's not certain that enough politicians will warm up to the idea. Senator Joe Manchin, for instance, recently questioned the need for extended credits when EV demand regularly outstrips supply. And when the current Senate frequently shoots down bills without clear bipartisan support, any attempt to legislate the credit could fall apart.
The companies have strong motivations to act now, though. Republicans may regain control of one or both sides of Congress during this fall's midterm elections, and car industry execs are concerned the shift in power could kill chances of extending tax credits. Former President Trumpin his proposed 2020 budget, and had the support of Republicans — the chances aren't high that the GOP will back an extension.