When developing the RB20, it was assumed - with the RB19 in mind - that Red Bull did not need a special rear wing to be the fastest. In hindsight, it turns out that it did need one. So ...

Red Bull's domination of F1 ... And how does that help the RB19? "The more downforce you can generate from the underbody in this way, the less rear wing you need and so your straight-line speed ...