Proterra SPAC Presentation Deck

PROTERRA OVERVIEW Track Record of Enabling Commercial Vehicle Electrification 1 2 3 4 5 6 January 2021 Integrated Technology Ecosystem Proven, Real-World Validation Significant Addressable Market Today Strategic Partnerships with Near-Term Deliveries Real Revenue, Rapid Growth, Clear Visibility Premier Strategic and Financial Investors PROTERRA POWERED ~16MM Real-World Service Miles ~$260Bn+ Global Commercial Electric Vehicle Market 3 DAIMLER $193MM '20E Revenue Constellation. An Exelon Company EDISON INTERNATIONAL 1. Over 550 vehicles on the road and over 450 vehicles in backlog as of September 2020 2. 2012-2019 Proterra electric transit bus market share in North America; refer to Index on page 52 for additional information 3. Includes commercial vehicles and charging; refer to Index on page 52 for additional information 4. From 2010 to 2019; refer to Index on page 52 for additional information PROTERRA TRANSIT 1,000+ Vehicles ¹ ~85% Decline in Electric Battery Costs 4 VAN HOOL 68% '20E-'25E Revenue CAGR DAIMLER BMW i Ventures 50%+ Electric Transit Bus Market Share ² ~40% Lower Vehicle Operating Costs 5 BUSTECH FRANKLIN TEMPLETON $750MM+ Orders and Backlog 7 INVESTMENTS COWEN PROTERRA PROTERRA ENERGY™ FLEET SOLUTIONS 54MW Charging Installations 100% Zero Emissions by 2050 15 State Targets 6 optimal 25% '25E Gross Margin generation. KPCB KLEINER PERKINS CAUFIELD BYERS 5. Versus diesel; refer to Index on page 52 for additional information 6. Medium-duty and heavy-duty truck market; refer to Index on page 52 for additional information 7. As of September 2020; represents Proterra Transit backlog and Proterra Powered orders signed and under advanced negotiation Note: Refer to Disclaimer on pages 2 and 3 regarding forward-looking statements and use of projections 8

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