The main purpose of the USA CAR Act is to provide financial relief to consumers who take out loans to purchase automobiles. Specifically, it allows individuals to deduct the interest they pay on loans for qualifying vehicles from their taxable income. This is intended to make car ownership more affordable and encourage the purchase of vehicles made in the United States. Key provisions of the Act include the definition of "qualified automobile interest," which refers to interest paid on loans taken out after January 1, 2025, for vehicles that are secured by the automobile itself.