Proterra SPAC Presentation Deck

PROTERRA OVERVIEW PROTERRA POWERED DAIMLER ● PROTERRA Daimler Strategic Partnership Validates Our Technology in Multiple Segments World's Largest Commercial Vehicle Manufacturer is a Customer and Investor 71 TRANSIT Seven Iconic Commercial Vehicle Brands Under One Roof BUILT BUSE April 8, 2021 PROTERRA ENERGY FLEET IDENTIONS WESTERN STAR Anchor investor in the current $415MM PIPE FREIGHTLINER BHARATBENZ World's largest commercial vehicle manufacturer with unmatched global scale -$50 billion in annual revenue and ~520,000 annual vehicles sold 1 Meaningful Shareholder and Senior Executive Commitment In September 2018, Daimler Trucks & Buses co-led investment in Proterra SETRA FUSO Jochen Goetz Head of Finance & Controlling, Daimler Trucks & Buses Proterra Director 1. Fiscal Year 2019 2. Refer to Index on page 66 for additional information 3. Refer to Index on page 66 for additional information Sizable, Existing Commercial Agreements CREIGHTLINED Costem Chassis. PROTERRA BUILT BUSE Deliveries expected to begin in 2021 Existing Industry Fleet in U.S.: 300,000+ vehicles 2 In production since Q2 2020 Existing Industry Fleet in U.S.: 480,000+ vehicles 3 21

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