Something that stuck with me from at least a decade back was multimodal transit, aka cars that can become trains and vice versa. Imagine driving your low speed cargo pod car thing to the local train station and hitching together with a bunch of others before making the hour trip to a neighboring city on rails at high speed only to split up automatically at the other end and continue to your separate destinations. Its a combination of the efficiencies of transit and the freedoms of an individualized last mile solution. It reduces the need for freeways without hurting mobility at the origin/ destination.