If you are getting premature shut offs (PSOs) on every fill, I think there is something wrong. I'm not familiar with the new Mustang's system specifically, but here are some possibilities:
fuel level vent valve not operating properly
vapor return line clogged/kinked/damaged
valve at the end...
Probably, but he shopped around in MI, which has the highest rates in the nation last I checked.
Even if you take the exact same person, with the exact same car, and put them in statistically identical neighborhoods, you can't compare auto insurance rates across state lines. For example, one...