I'll place a gentleman's wager that the Taycan won't reach 230-235 miles of real usable highway range, at a steady 80 mph - and that's without white knuckling it, or going to below recommended charge levels. This would mean greater than 300 EPA range, probably more like 310+ and I'd be frankly stunned if it hit that number. If the bloated E-Tron is any benchmark, it won't.
If it comes in at 5.1k lbs, has a 95kWhr battery, and has the same efficiency and drag coefficient as the Model 3 (all seriously optimistic assumptions in my estimation), it would just clear that 300 EPA rated range. All of that is of course optimistic, based on E tron weight, and estimated mileage. And it's just inconceivable that its CD with the Panabanana body is going to be as good as the Model 3.