Tesla shares rose 0.3% overnight and about 4% this week ahead of the company’s October 1 Roadster unveiling, putting the stock on track for its strongest weekly advance in more than a month. A short teaser showed industrial doors opening onto a dark scene, prompting speculation about possible SpaceX-linked technology and a redesigned front light bar, but Tesla has not confirmed new Roadster specifications, pricing, or delivery timing. The company recently resumed Roadster reservations; the vehicle was first shown in 2017, with deliveries once targeted for 2020, and remains listed as in development in Tesla’s latest capacity update. Tesla also began high-volume Semi production at its dedicated 1.8-million-square-foot factory in Sparks, Nevada, which the company says can produce 50,000 trucks annually. Elon Musk said the Semi could receive self-driving features soon, while Tesla says its Megacharger (high-power truck charging system) can restore up to 60% of range in 30 minutes. Customer deliveries are starting as production rises, although Tesla has not disclosed its expected Semi deliveries for this year. Investors are also monitoring Cybercab production, other vehicle programs, and Tesla’s first Fitch BBB credit rating secured this week.