During the recently-concluded United Nations Climate Change Conference 2009 (it was a failure! It was a success!), one of the many non-gasoline-powered vehicles present was a hydrogen-powered Ford Transit developed by Revolve Technologies (formerly known as Roush Technologies). The van burns hydrogen in a conventional 2.3-litre 4-cylinder internal combustion petrol engine, a method that Revolve business development manager Bill Waddell called "a stepping stone in the route to use hydrogen as an alternative fuel." The bi-fuel system also allows standard petrol to be burned. The Royal Mail in the UK plans on using two of these converted vans in operator trials soon.
The medium-sized Transit van can carry 4.5 kg of H2 in three tanks under the floor. This gives the van a hydrogen-only range of 95 miles in the city and 135 on the highway. More information on the van here. Thanks to Roy B. for the tip!
[Source: Logistics Manager, Eco-Rally]