The advancement of autonomous electric vehicles presents new opportunities for sustainable and efficient public transportation. This paper explores an innovative approach that integrates shared dynamic charging, convoy automation, and a novel mechanical coupling mechanism to enhance safety in traveling convoys for urban mobility. The proposed system enables autonomous vehicles to form modular convoys, dynamically adjusting capacity based on passenger demand. An intelligent energy management framework allows for real-time power distribution among vehicles through on-the-go charging, leveraging a single-wire catenary infrastructure. A nonlinear model predictive control (NMPC) strategy ensures precise trajectory tracking and adaptive leader-follower transitions within convoys. Additionally, a fail-safe mechanical coupling mechanism facilitates the delayed transfer of steering, ensuring stability and safety even in the event of electronic failures. Simulation results validate the effectiveness of the control strategy, while ongoing prototype development aims to assess the feasibility of the mechanical and charging solutions. This research contributes to the development of sustainable, flexible, and resilient urban transport networks.