Tesla shares fell roughly 1% Tuesday to about $354 as investors awaited the electric-vehicle maker’s Q3 delivery report, expected Friday. Analysts see deliveries near 463,000 vehicles, down 7% from the 497,000 reported a year earlier, when a $7,500 federal electric-vehicle tax incentive supported demand. JPMorgan lowered its forecast to 482,000 vehicles, citing weakness in the American and Chinese markets. Chinese wholesale volumes rose 19% in July and August, supported by a 92% jump in exports, but domestic retail sales fell 21%. European Union registrations declined about 9%, with France and Germany holding up better than the United Kingdom, Italy and Spain. Tesla said supervised Full Self-Driving (driver-assisted driving software) subscriptions reached 1.48 million by the end of Q2, up 56% year over year. The company also postponed its Roadster unveiling from October 1 to October 15 because of anticipated severe weather. The next-generation Roadster was first introduced in 2017, and early reservation holders have already waited several years beyond the originally expected 2020 deliveries.