VEHICLE SYSTEM COMPRISING A FUEL CELL

A vehicle system [0002] comprising a fuel cell, at least one container for the storage (4) of ammonia precursor, and a first and second fuel generator (2, 3). The first and second fuel generators are configured to convert the ammonia precursor into fuel for use in the fuel cell (1). The first fuel generator is configured to carry out the ammonia precursor conversion within a lower temperature range than the second fuel generator.