Will this still work a few years after Tesla has been churning out Model 3s much faster than it's been expanding the SC network? At some point in the future, I can envision long lines at the Superchargers during an evacuation.
The future evacuation problem I fear might be lessened by more commercial charging stations, but in my area, they price gouge so flagrantly that the electric "fuel" they sell is 2.5 times as expensive as gasoline. Replacing our system of gasoline distribution with that model is self-defeating. Moreover, it may never become widespread because so much recharging will be done at EV owners' homes, that there may well never be the need for any public charging system large enough to handle an emergency like a hurricane evacuation.
Something has to give in the next 10-20 years. I suspect it will, but getting there will probably be painful. I also suspect that things won't come into equilibrium until battery and charging technology has advanced enough to put 300 miles of range into a car in 10 minutes.
For now, though, it's good to hear stories like tropical1's!