From The New York Times Magazine,
April 2017

Move quickly:
the odds of survival
are highest if you get out
in the first 60 seconds.

Don’t open the door.

If there are children present
unfasten them from the back seat.
Push them out the window,
oldest ones first.

In a submersion study
from the University of Manitoba
three passengers were typically
able to exit
with a child mannequin
in just 53 seconds.

Electric car windows
will likely continue to work
after impact with water. Still,
keep a small glass-breaking tool
on your key-ring or hanging
from the rearview mirror,
just in case.