Iâ€™ve been doing some research and thinking recently into how vehicle emissions might be used to generate electricity in order to power the vehicle itself. Iâ€™ve seen a few products and research projects centred on this topic, although they all seem to be focused on converting the heat in the exhaust into potential energy. Would it be possible to use a vehicleâ€™s emissions and force them through piping with large numbers of small generators, effectively creating a wind-farm within your own car. I respect it would take thousands if not millions of tiny wind turbines to complete this, but Iâ€™d really appreciate some help with regards to the equations and formulas of wind to potential energy conversion. Could such a system be suspended using a helium balloon to lessen the weight exerted on the car? If you had enough turbines could you simply use a very small amount of wind (vehicle emissions) in order to the supply the system? Many thanks, Jeremy.