Holden Ringer, a 26-year-old from Dallas, has just completed an inspiring 4,000-mile walk for a charitable cause. He shares gripping tales from his journey, pushing a stroller named Smiley while raising awareness for active transportation. The conversation highlights his insights on vulnerability faced by pedestrians and the disparities in infrastructure, particularly regarding race and gender. Ringer emphasizes the importance of advocacy in every step, revealing the compelling narrative behind his epic quest and the urgent need for better pedestrian safety.