Difficult question! I think today’s life is difficult for designers who create the liveries. In the past we had cars that only represented one main sponsor. They were very easy to recognize and gave a great visibility to the brand who was sponsoring the car.
Today it’s rather rare to have one main sponsor. The grid shows cars with many logos and the car is mostly painted in black, grey or white. For example; the Renault F1-cars of the 80’s, the use of their colors was very strong, with big Renault logo’s. The Renault of today is black with a shy yellow stripe and with many logo’s that are difficult to recognize. Besides the abundance of brands, the current cars are very complicated, with all the aero kits and dark spaces which make it difficult to work with, seen from a graphic point of view.