Pickens,
83,
an
outspoken
champion
of
using
natural
gas
for
transport,
made
the
comments
after
his
company
Clean
Energy
Fuels
announced
a
deal
with
truck
maker
Navistar
to
make
more
natural
gas
vehicles
and
build
more
fuelling
stations.
Natural
gas
prices
fell
to
10-year
lows
early
last
week,
increasing
the
attractiveness
of
the
fuel
to
power
vehicles
relative
to
diesel
and
gasoline,
as
record
high
supply
swamps
the
market
during
one
of
the
mildest
winters
on
record.
But
the
widespread
use
of
the
fuel
in
transport
will
not
move
prices
substantially.…