Global Automakers submitted comments to the U.S. DOT’s December 26, 2018 V2X notice on developments of communication technologies that could be used for V2X, how these how these developments impact deployment, and the Department's role in encouraging the integration of V2X technologies. The comments note that U.S. DOT’s efforts in this area are needed to provide certainty for future deployment and recommends the Department convene an industry discussion on interoperability and coexistence of V2X technologies and to continue interference testing of unlicensed Wi-Fi communications.