I. INTRODUCTION
Reducing congestion in metropolitan areas is a critical goal to be currently addressed in a sustainable perspective. When public demand is properly structured, as within inner-cities or large industrial areas, autonomous electric vehicles available in free-access constitute an attractive solution. In such a context, platooning navigation appears as a desirable additional functionality, since on one hand it can improve safety and fluidity in the traffic, and on the other hand it can ease maintenance operations (e.g. to guide a group of vehicles to some station in one journey). Platooning is therefore considered in this paper and two points of special interest are investigated more particularly.