I mean I never drove Wolfsburg -> Poznań -> Vienna, and I would probably get a bit better milage if I drove an average of 70. However, even when my usage gets close to that, I still don't get down to the optimistic 17kWh/100km i put down.
> ordinary cars can get to 13kWh/100km
Unfortunately I don't have such a car. :)
> which ain't that far from 7.5 you mention
I'd say that needing a 30kWh battery for 400km range vs 52kWh is a significant difference, but that'd be opinionated hair-splitting. 13 is much better and much closer to 7.5 than what my car can do.
ordinary cars can get to 13kWh/100km which ain't that far from 7.5 you mention