We know FedEx has been experimenting in many projects with PLUG but all have stoped due to the economies. The implication of the DHL comment last night was that they have made a commitment (may be not the $600m that Amazon and Walmart made) to roll out a solution somewhere that is significant in the number of locations and units.
IMHO needs to be 25-30 locations and 1000 + fuel cells with H2 supply