As a brief summary of the Distributed/Decentralized Hybrid Workshop on sustainable vehicular service ecology, this letter discusses the challenges of autonomous vehicular services and the potential of decentralized autonomous organizations and operations (DAOs) to address them. It outlines the future research issues on the integration of blockchain-based TRUE DAOs (TAOs) within vehicular services, including the ecological framework and the corresponding organizational, cooperational, executional and application technologies, to support a sustainable ecology of mobility.