This presentation discusses the adoption of IEEE 802.15.4 and 3GPP LTE for wide-area network machine-to-machine (M2M) communication. It outlines the speaker's vision of enabling smart cities by fully leveraging the large-scale deployment of smart metering communication networks. He presents the challenges and his proposed solutions when adopting 802.15.4 and LTE technologies for this vision. He then assesses the merits of these and other technologies in the context of our vision's wide-area, low-data-rate, M2M network..