This technical note discusses the synergetic attributes of four emerging technologies that have significant potentials to enhance smart and sustainable urban mobility, and ultimately improve urban sustainability. Shared mobility, wireless charging, vehicle-to-grid (V2G) integration, and vehicle automation have complementary features that rectify the practical barriers and implementation restrictions of each other. We attempt to bridge between transportation research studies and the environmental sustainability community, discuss the recent findings, and identify critical knowledge gaps to better understand the synergies and mutual benefits of these emerging technologies and avoid unintended environmental consequences.