In the last years, there has been a huge rise in smart vehicles, because of the most of the countries seek to address future energy requirements rapidly, trying to achieve sustainable transportation. To this aim, electric vehicles represent promising pathways to reduced CO2. In near future, we assume the availability of smart vehicles equipped with sensing and communication capabilities, smart infrastructures with sensors, and smart communications between infrastructure and vehicles, enabling more efficient control strategies aiming at mobility optimization. The ECARS 2015 conference is aimed at addressing all the recent innovations, in terms of research and development, regarding the electric vehicles, optimization of transportation based on wireless sensors, mobile networks and their hot connected open issues. In particular, the ECARS 2015 conference is looking at recent progress and research from both industrial and academic sectors, strictly related to developing new technologies to fit with infrastructure and current trends.