Tesla Semi unveiled at Hawthorne CA by Elon Musk: claimed 500-mi range, 0-60 mph in 5s empty / 20s loaded with 80,000 lb load, four independent rear motors, $150K (300 mi) / $180K (500 mi) base, $200K Founders Series — production targeted 2019

PepsiCo orders 100, Walmart 30 (US+CA), UPS 125, Anheuser-Busch 40, Sysco 50, FedEx 20, JB Hunt and DHL also place pre-orders within weeks of reveal — totals push reservation book past 500 units before any production

First Tesla Semi prototypes begin hauling cargo between Gigafactory Nevada and Fremont in real production lanes — but volume launch slips from 2019 to 2020 to 2021 as 4680-cell supply and Reno expansion lag

Tesla pushes Semi production from 2020 to 2021, citing need for additional 4680 battery cells before volume manufacture; pandemic supply-chain disruption compounds delay — pre-order book held at ~2,000 units

California Air Resources Board adopts the Advanced Clean Trucks rule requiring rising ZEV truck-sales mandate from MY2024 — central regulatory pillar that drives Class 8 ZEV ramps at Tesla, Daimler, Volvo, PACCAR and BYD across the next decade

Tesla announces successful 500-mi loaded test run from Fremont CA to San Diego with 81,000 lb GCW; production confirmed to start at Reno NV pilot line in Q4 2022 — final pre-launch validation

First Tesla Semi customer deliveries to PepsiCo Dec 1 2022 (5 years late vs original 2019 target) at Gigafactory Nevada handover event — 15 trucks for Modesto/Sacramento Frito-Lay and PepsiCo bottling; 500-mile range, 70K lb GVWR target, three rear motors, 1,000+ kWh battery; pilot-line cadence well below 1,000 units/yr

First Tesla Megacharger sites commissioned at PepsiCo Modesto and Sacramento depots: 750 kW DC dispenser; proprietary connector pre-MCS; sites enable >300 mi back-to-back loaded runs

DOE selects Tesla for $99M IIJA grant covering Reno-area Megacharger corridor (9 sites along I-5/I-80) — first US federal grant supporting Tesla Semi infrastructure; cements Megacharger as primary Tesla HD charging path

Tesla breaks ground on dedicated high-volume Semi factory at Gigafactory Nevada: 50,000 units/yr nameplate capacity, $3.6B capex; line uses 4680 cells from on-site cell plant — pivotal step from pilot scale to mass production

Saia, Sysco, ArcBest, Costco and Frito-Lay added to validation fleet for 2025-26 deliveries; cumulative pre-orders >2,000 units — broadens Semi anchor customers beyond original PepsiCo / Walmart cohort

Tesla Semi voluntary recall (NHTSA 25V-061): parking-brake software fix on early-production units (~36 trucks) — minor but first NHTSA action against the Semi platform

Tesla guides volume Semi production targeted Q4 2025 / H1 2026 from new 50K/yr Reno line; cumulative pre-orders >2,000 units; Pilot Flying J Megacharger network agreement adds 50 truck-stop sites — turns 2026 into the year of Semi scale-out

Tesla commissions Semi high-volume Reno line; first dozens of trucks built off the new line in December; Pilot Flying J Megacharger network rollout begins at 8 truck-stop sites along I-80 / I-10