Tesla has already started using batteries, or at least the containers they are held in, as part of its vehicle structure – now research into batteries which are mostly made of carbon fiber – has raised the idea of building a vehicle which IS a battery. The research has just been released from Chalmers University of Technology, where it has managed to store about ten times the energy that has previously been stored using this approach. It is not yet close to the density of lithium ion batteries, but the University is certain it can develop it further, and given that the carbon fiber can be used as an electrode, a conductor, as well as a load bearing materials all…