Along with the front-wing endplates, the bargeboard area of an F1 car has been allowed to get out of hand. If anyone wants to reduce the costs and improve the show, these two areas should be addressed very quickly. This drawing shows you the number of turning vanes that work together to improve the underfloor performance. It is a fantastic feat of aerodynamic flow-structures optimisation but, as soon as you get close to another car and the airflow to these components gets any level of turbulence, this aero-flow structure falls over and reduces the performance of the other aerodynamic components it was influencing. The other, and probably more important, issue with this area of the car for the teams themselves is that there are no sponsors because there is no surface that can be seen from different angles. This problem is being tackled with the 2019 regulations.