## 8 Discussion and Conclusions  
Following the precedent analysis, we will first call attention to the evolution of energy managing in mobility concerns in generally. We are going to point out the elements influencing such evolution historically and in foreseen future. First, constraints in terms of CO2 emissions pushed automotive industry manufacturers to develop a \"cleaner\" concept such as electric vehicles (EV) and hybrid electric vehicles (HEV) to replace full thermic vehicles. Note that the battery storage is much more important in the case of EV compared to HEV. EV, at the moment, presents a limited autonomy due to the battery character and HEV becomes a significant concurrent. Nevertheless, HEV still has an important part of thermic dependence that related again to the limited autonomy of the electric part. So, the solution of rechargeable hybrid electric vehicle (RHEV) becomes interesting. So, one can control the partition of the thermic and electric parts. Note that RHEV is equipped normally with more battery storage than the HEV and less than EV. EV and RHEV presently uses a cable link for static charging which may include annoying and/or inconvenient items for the user. In this context, the contactless inductive power transfer (IPT) static charger is an interesting substitute. Thus, such static IPT technology designated as static when the vehicle (EV or RHEV) is immobile during charging, that likely substitute the wired systems. However, we can go further in direction of more edgy option with the possibility of using the inductive transfer when travelling, that using the dynamic IPT. Furthermore, we can use IPT operating in both modes static or dynamic. We can imagine a hybrid vehicle rechargeable statically or while traveling. This will offer all the possibilities of energy supply. The vehicle could be operated in thermal or electric mode and the battery could be charged statically or while driving. In such a case, the partition between the different energy sources could be managed to be, for each, from little to full depending on the circumstances. In this case, we have to compare the gain in comfort and time compared to the complexity of the devices required and the cost of the infrastructure. The investigations followed in this paper concerned several questions regarding contactless energy transfer applied to mobility. This involved the system choice, the transfer options, the systems interoperability, the modeling strategies and the electromagnetic compatibility with human exposure analyses. The inductive power transfer IPT appears to be the most appropriate for electric vehicles. The battery-charging mode in stationary parking that avoiding cable connection requires the use a relatively simple IPT with simple position adjusting for efficient transfer. Nevertheless, an interoperability analysis is necessary to permit standardization for compatibility of different IPT systems. The dynamic road-driving mode is more practical and less time consuming. However, this mode uses a more complicated IPT with smart sensors and control strategies as well as communication devices. Moreover, the needed infrastructure for this mode is high-priced and requires regular care. Nevertheless, these problemat aspects possibly will look like negligible in the near future regarding the increasing number of electric vehicles and the evolution in smart technologies as well as autonomous vehicle (AV) skills. From this review, we noticed that research in the field of wireless energy transfer is very active and considerable in the literature. The challenges in this topic resulting from this review are diverse, technical, economic, societal, security, environmental... They involve different expertise, electrical, mechanical, electrochemical, electromagnetic, material, infrastructure, industrial compatibility, health, societal tolerability... The different EV options using IPT technology are the full EV and the RHEV. Both can use IPT in static or mobile mode. The challenges in each of these situations may be different.