Abstract: One of the major causes of drag in vehicles is due to the low pressure and/or turbulent vortex region behind the vehicle. In some vehicles multiple smaller vortices may form around the vehicle, and elimination of these through shaping of bodywork of vehicles is common practice to increase efficiency of the vehicle. A vehicle is provided configured such that, when moving at a speed above a predetermined threshold speed, at least one turbulent and/or low pressure region (190) is formed adjacent to the vehicle, the vehicle comprising: at least one propelling nozzle (200) located adjacent to the at least one region; and a system for providing gas to the at least one nozzle (200) for expulsion into the at least one region (190).