"The Microcab is the product of innovative thinking by entrepreneur John Jostins. For many years he has visualised a small, urban vehicle with zero emissions suitable for use as a taxi or light freight carrier. The result is a vehicle powered by a hydrogen fuel cell, pollution free and virtually silent in operation. The only emission is water vapour."
And unlike some concepts that are out there, this one has a real-world presence. A prototype recently took part in the Revolve: Brighton to London eco-car rally, which was attended by the Prince of Wales. ::Microcab::