In this chapter we discuss how wireless connectivity can be utilized in order to improve the longitudinal control of automated vehicles. We use the models of human driving introduced in Chap. 2 and extend the tools developed for the control design in Chap. 3 by incorporation of the motion information from multiple vehicles ahead. We evaluate the impacts of connectivity onString stability string stabilityStability of mixed vehicle chains that contain human-driven and automated vehicles. We also study the effects of nonlinearities on connected vehicle systems. Finally, we highlight the benefits of communication for energy consumptionEnergy consumption and investigate the effects of uncertainties in human parameters.