According to a photo essay in the Guardian, car manufacturers are ceasing production because they can’t sell the cars they have and are running out of storage space.
Bristol (U.K.):

Corby, Northamptonshire (U.K.):

Valencia (Spain):

The port of Civitavecchia (Italy):

Sheerness (U.K.):

See also these images of the economic downturn at a mall in Las Vegas.
