Tariffs as an approach to strategically move industries into one's country are a valid approach - of course the result is that the cost of the goods tariffed, will rise by the amount of the Tariff...
The price and market of/for vehicles in the USA has been distorted by this for decades... with 25% Tariff on imported trucks resulting in American manufacturers focusing on that format to the exclusion for the most part of standard cars (where they have to compete with europe/japan/china etc...)
Australia used to have substantial Tariff's which were put into place to protect the local manufacturing industry, and ensure that we have a local industry... (along with government largess for those same industries) - it worked and Australia had car manufacturing locally from the 1950's to circa 2000 .... then they stopped the funding, and cut back on the Tariff's, GM, Ford and Toyota pretty quickly closed up shop, and transitioned to an import model.
Cost of cars here in Australia has remained high (50% to 100% higher than in the USA).
What may well happen, is that the cost of cars in the USA will rise by 25% to 50% as a result...