In October 2016, a first international challenge devoted to the energy management of a fuel cell/battery vehicle was launched during the 2016 IEEE Vehicle Power and Propulsion Conference (VPPC), in Hangzhou, China. Following the success of this first initiative, this paper describes the technical framework of a second challenge focused on the energy management of a Range Extender Electric Vehicle, the Chevrolet Volt. Both Academic and Professional teams are welcomed to participate in this challenge. The aim is to develop a robust Energy Management Strategy to minimize the fuel consumption and the battery charging cost. In this way, a validated vehicle model and control will be provided to the challenge participants by the use of the Autonomie Matlab Simulink & Stateflow based software, developed by the Argonne National Laboratory. The top scoring participants will be distinguished and invited to present their results in a special session at the 2018 IEEE VPPC.