Trump speaking at the Detroit Economic Club on Thursday.Bill Pugliano/Getty ImagesTrump announced a new tax proposal to appeal to car buyers and the auto industry.It took him a while to get to that. Along the way, he denigrated Detroit, where he was speaking.He also announced his daughter Tiffany was pregnant and mused about the word "grocery."On Thursday, former President Donald Trump traveled to Michigan to announce a new tax cut proposal designed to appeal to both car buyers and the auto industry.Trump told the Detroit Economic Club that under the new proposal, interest on car loans would be fully tax-deductible, as is the case with home mortgage loans.The proposal, which would require Congress's approval and is part of a broader array of tax cuts that the former president would seek next year, aims to make it easier to buy a car and stimulate the auto manufacturing industry."It's like the paper clip," Trump mused, claiming he'd spoken to a person who worked in the auto industry who was dumbstruck by the proposal.