Proterra SPAC Presentation Deck

PROTERRA OVERVIEW Massive Commercial Vehicle Market Primed for Electrification $260 Billion Total Addressable Market Opportunity Ideal Characteristics... Large Fleets Cost-Driven Decisions High Mileage Low Fuel Economy Maintenance Intensive January 2021 Predictable Routes ...Increasing Demand for Sustainable Solutions... Governments Communities Companies 15 states targeting 100% zero-emission medium-duty and heavy-duty trucks by 2050 1 ~70% of consumers have changed their behavior out of concern for climate change 2 World's largest logistics players are targeting to electrify their fleets 1. Refer to Index on page 52 for additional information 2. Refer to Index on page 52 for additional information 3. From 2010 to 2019; refer to Index on page 52 for additional information 4. Versus diesel; 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 ...and Increasingly Compelling TCO ~85% PROTERRA ~40% Decline in electric battery costs since 2010 ³ Lower electric vehicle operating cost vs. diesel 4 10

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