(Bloomberg) -- The metric Tesla Inc. told investors early last year was most important to its executives is in steady decline.Most Read from BloombergPlunging Home Prices, Fleeing Companies: Austin’s Glow Is FadingJavier Milei Fuels Wild Rally That Makes Peso No. 1 in WorldFed’s Preferred Core Inflation Gauge Rose at Brisk Pace in MarchHuawei’s New Phone Runs Latest Version of Made-in-China ChipBillionaire Stephen Ross Believes in South Florida—and Is Spending Big to Transform ItThe carmaker rep