The core policies are:

• A subsidy which targets cheaper EVs to not-super-rich and limits it to cars with key components made in the US
• An emissions rule which will effectively force a significant fraction of cars sold to be EVs in a few years
• subsidies for new factories

Trump will surely get rid of those.

The tariff he hasn’t really weighed in on; he seems to think of himself as a mercantilist, so he might keep it.

To be fair maybe he will also reverse the part where Biden removed eligibility from EV’s for the Tax credit that aren’t sourced from America.

Only bad thing he could do is remove the emissions regulations which weren’t even harsh.