Here in Illinois you can get in trouble for trying to put gas in unapproved
containers.  I ran out of gas one time and tried to use a blue plastic kerosene
can.  I got about a half gallon in before the attendant shut the pump off
from inside.  I now keep an empty plastic 1 gal gasoline container under the rear
seat of my Vanagon Carat.  I keep a 1 gal unopened can of Coleman fuel in the
rear most cupboard of my Westy.  I have used it more than once on a dark
night in an unfamiliar place.

Tom
Illinois.