Is the Audi RS 6 powerful enough for highway driving?

It features a 4.0L V8 Twin-Turbo, sprinting from 0 to 100 km/h in just 3.4 seconds. For buyers considering the Audi RS 6, that matters because it affects how easy the car is to live with, whether for commuting, family use, long-distance driving or ownership costs. The useful way to read this is not as an isolated specification, but as a clue to how the car will feel in real daily use.