Supply-chain kinks continued to suppress vehicle inventory and sales in the first half of the year, exacerbating a seller’s market that has pushed new-car prices to record highs. Sales of new vehicles in the U.S. during the first six months of 2022 were expected to have fallen about 17% from a year earlier, according to Cox Automotive. Most auto makers on Friday are scheduled to report sales tallies for June and the first half of the year.