With sales of all non-zero emission heavy goods vehicles (HGVs) ending in 2035 or earlier - and those over 26 tonnes by 2040 - there is a race on to provide the most viable alternative to internal combustion.
Glasgow-based Hydrogen Vehicle Systems appears to be one of the UK's leaders in this emerging sector, having designed and developed a technology demonstrator as a precursor to having a new hydrogen-electric HGV ready for launch early next year.
Last month, the company revealed the demo vehicle, showcasing its fully-functional powertrain, which is set for use in its 40 tonne articulated tractor unit.
