Garryd Howells' portfolio summarizes several industrial design projects he worked on for various companies including Hitachi, ADL, and Arash Motors. The portfolio highlights 3 main projects: designing seating and interior components for Hitachi's AT100 and AT200 rail mockups, leading interior design work for ADL's Enviro 400 bus redesign, and contributing exterior and interior design for Arash Motor's AF-8 vehicle during an internship. The portfolio demonstrates Howells' skills in CAD programs like Rhino, Alias, and Adobe tools for industrial design.