At 07:22 PM 11/6/2010  -0600, miguel pacheco wrote:
>How about a solenoid operated, normally open, SDV (shut down valve.)
>The coil becomes energized when the ignition is on and, voila!, the
>tables can swing about and the bicycles can roll to and fro.....

On boats it's the other way around -- you have to energize the
solenoid to open the valve.

Incidentally, Dave, people in boats actually cook while underway.  In
rough weather sometimes, where the cook has to be jammed (or tied) in
place just to work.  Using stoves (although propane is now much more
common) where they have to slosh liquid fuel (alcohol) around the
cabin every time they light the stove.

Should they stop?

Yours,
David