Are you saying this happens to your public roads?
I imagine at that point the city/county would build a bridge. That's not the car companies' problem; it's the municipalities'. I imagine a Subaru Outback would do just fine in 99% of circumstances, right? There's no need for a Ford Expedition daily driver, right?
The Vogn is not meant to replace 4WD vehicles. It's not meant to ford water or cross the Alaskan tundra or any of that. It's meant to do what every other 2WD sedan in the world is meant to do.