Driving up north for Christmas, we pass a power station belting muck out into the atmosphere. Suddenly we hear excited shouts from the back of the car, where Bernard has been pointing out cars and trees to his Bear.
Oh LOOK! CLOUDS coming out! LOOK Bear! Clouds coming out of that hole! All by themselves! Look! Look! CLOUDS COMING OUT OF THAT HOLE! Clouds coming out ALL BY THEMSELVES! Look Bear! Look!
The power station is a cloud factory.