Proterra SPAC Presentation Deck

PROTERRA OVERVIEW PROTERRA POWERED PROTERRA TRANSIT 2% PROTERRA ENERGY Proterra Transit: North American Bus Market is Rapidly Electrifying 130+ Communities in 43 States and Provinces Choose Proterra LETI CONTENS Projected to be 50% Electrified by 2025 1 % of Total North American Bus Market (Annual Sales) January 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 Proterra Customer 550+ Vehicles on the Road $400MM Cumulative Sales PROTERRA 1. Refer to Index on page 52 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 52 for additional information 3. NFI Group's active North American transit bus bid universe; refer to Index on page 52 for additional information 4. Refer to Index on page 52 for additional information Note: Refer to Disclaimer on pages 2 and 3 regarding forward-looking statements and use of projections 450+ Vehicles in Backlog 20

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