Neal E. Boudette and Jack Ewing

North American car companies have operated across borders for three decades. Tariffs would raise prices and cost jobs in the short run, analysts say.

High interest rates, economic uncertainty and a cyberattack appear to have dampened sales in the three months between April and June.

Trevor Milton, founder and executive chairman of Nikola, resigned after an investment fund accused him of making false assertions about his company’s technology.