Proterra SPAC Presentation Deck

PROTERRA BUSINESS UNITS PROTERRA ENERGY 2% PROTERRA PROTERRA POWERED Proterra Transit: North American Bus Market Is Rapidly Electrifying 130+ Communities in 43 States and Provinces Choose Proterra TRANSIT Frost & Sullivan Project 50% Electric Penetration by 2025 1 % of Total North American Bus Market (Annual Sales) April 8, 2021 '17-'25 CAGR: 50% 50% 2017 2018 2019 2020 2021 2022 2023 2024 2025 25K+ North American Buses Must be 100% Zero Emission by 2040² Zero Emission Buses Now 26% of Active Bid Universe ³ Proterra's Customers Operate Over 30% of the N.A. Transit Bus Fleet 4 CO @ Proterra Customer 600+ Vehicles on the Road Ⓒ Ⓡ ro $450MM+ Cumulative Revenue 1. Refer to Index on page 66 for additional information 2. Reflects seven North American city and state mandates (California, NYC, Toronto, Chicago, Seattle, Minneapolis and Miami); refer to Index on page 66 for additional information 3. NFI Group's active North American transit bus bid universe; refer to Index on page 66 for additional information 4. Refer to Index on page 66 for additional information PROTERRA O 450+ Vehicles in Backlog 39

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