We give up all ideas of a fridge! It's a cool box.
We have been able to create low pressures, which are
good for insulating, like the way a thermos flask uses
a vacuum to keep drinks hot or cold. Our attempts to
actually reduce the temperature were pathetic, so we’ll
go for an insulating cool box instead and try find other
ways of getting cool water. So I wrap up water bottles
in material, tie them to the top of the vehicle, water
them down and we swoop off to Death Valley. We have
to stop on the way to keep the material wet - it just
dries out so fast in the heat and wind.
It worked, though - a load better than our attempts
at fridges! Ellen, dressed like one of the sperm in
Woody Allen's "Everything You Always Wanted To
Know About Sex" film, heaving the trolley and 'cool
box' across the jagged surface of Death Valley, was
almost too funny to bear.
We all get so tense and excited at the ends of the
shows. We only had one attempt, and everything had to
work first time:
* the pump Jonathan and Ellen made had to pump
* the cooled water had to get used quickly and Mike's
chemical reaction had to work
* the seals had to hold and the pump work for the fridge
to act as a cool box
The wheels of the trolley were the thing that gave,
and Ellen just kept pulling that trolley. It was hysterical,
we were weeping with laughter. It was probably the best
moment of the series for me (which is funny, given the
failure of the fridge).