An idea for removing cars from core areas (e.g. downtown, Santana Row) is presented; an idea that Athens is implementing to reduce pollution. Additionally, more shuttles are suggested. The autonomous last mile spoke and hub shown in the following link provides an idea of how these concepts might be implemented in a world where vehicles gain autonomy.
https://viodi.com/2015/09/08/a-transition-steps-to-an-autonomous-transport-future/