That's an interesting project, a good way to overcome the space taken by a conventional battery pack. Combining the lighter weight of carbon-fiber panels, which also have a good chemical stability (thus not requiring priming or painting), and the possibility to wrap it with photovoltaic cells, this can lead to a great imrpovement in the efficiency which easily justifies the initially higher cost. Would be a nice way to turn a V40 into a Prius-killer
