Just about anyone can cycle 12 miles and with traffic backed up
Fuel shortages are also no problem cycling.
https://www.yahoo.com/news/fuel-shor...173957716.html
Ho-hum.
I have a friend on the Gulf of Mexico side of the peninsula. They have
500 mies to drive to be safe from Irma.
To be sure, Irma will not exist as anything less than a hurricane while over Florida. Nevertheless, a Cat 1 or 2 is survivable.
Quite a job on a bike, as I'm sure you will agree.
Anything is better odds than 360 km / hr winds.
Bret Cahill