Whether you can take a tax credit for a plug-in electric vehicle (EV) depends on the manufacturer. The tax law set a 200,000 sales limit on manufacturers for these vehicles and Tesla and GM have already passed this limit; no credit for the purchase of a Tesla or GM EV is currently allowed. For other plug-in electric vehicles, the amount of the credit varies with the model. The IRS has a list of qualifying vehicles.
Debt secured by a principal residence or second home to the extent of the excess of fair market value over acquisition debt. An interest deduction is generally allowed for home equity debt up to $100,000 ($50,000 if married filing separately).