The field of transportation systems is moving towards a more sustainable and human-centric approach. Researchers are exploring the use of recycled materials, such as rPET, in the production of vehicle components, and investigating the behavioral and environmental implications of shared autonomous micro-mobility systems. There is also a growing focus on the development of human-centered ride-hailing systems that prioritize passenger fairness and driver preference. Additionally, the evaluation of automated vehicle controllers is becoming increasingly important, with a need for more comprehensive approaches that incorporate human-robot interaction metrics. Noteworthy papers in this area include: The study on rPET mechanical behavior under compressive stresses, which validated the use of recycled rPET for ecological production of real-sustainable products. The proposal of a structured evaluation framework for human-centric evaluation of interaction-aware automated vehicle controllers, which highlights the need for a more comprehensive evaluation approach. The design of HCRide, a human-centered ride-hailing system that effectively improves system efficiency, fairness, and driver preference. The investigation of the relationship between perceived maneuverability and involuntary eye movements under systematically varied time constants of ride-on machinery, which found moderate to weak positive correlations between perceived maneuverability scores and eye movement gain and accuracy.