Well, perhaps when you want to get from stoplight to stoplight quickly, or go drag racing, ok.
But when you want to get along on the Autobahn, the slight acceleration advantage of the S won't get you very far in the long run. So "helps cover distance"? Not really. You might reach your top speed a few seconds quicker, but then all the ICE's (and they don't even have to be of AMG caliber) come blasting past you, so by the time you deplete your batteries, they are miles away, perhaps even at their destination.
Take normal Autobahn speeds here between about 80 and 110 mph. How much range do you get then? Has anyone tried? Perhaps not, since I don't think there are a lot of US states whithout a speed limit. Not sure though if someone has tried it out on a racetrack?
There is that speed vs. range chart for the Model S.
Model S Efficiency and Range | Blog | Tesla Motors
It says 225 miles on a range charge at 80 mph but that's in ideal circumstances. You're right though, range would be greatly reduced.