Daimler has built 60 F-Cells (A Class) for world wide field trials to develop the technology to a volume production level by seeing how the vehicles perform under real world conditions and establish what the infrastructure will be. California and Michigan have these cars. If you happen to be in northern California and want to see one can go to the Sacramento Metropolitan Fire District's office and see one that is being used by the Battalion Chief-EMS Director.
I just came back from Sacramento but unfortunately the car was in San Diego so I did not get any pictures of the little red car that they have. A silver blue one was used in some promotional literature.