Jun 09 2021 Wessex Water trucks powered by sewage and food waste are hitting the roads this summer, a transport revolution that could potentially slash greenhouse gas emissions and improve air quality. Each truck converted from diesel to biomethane achieves a carbon saving that’s equivalent to removing more than 100 cars from the roads. Following in the footsteps of the famous Bristol ‘poo bus’, which was the first in the UK to be powered by biomethane, the new HGVs run on Bio-CNG (compressed natural gas) and are helping to reduce Wessex Water’s carbon emissions and fuel costs. Bio-CNG fuel can either be derived from liquified natural gas or from the bi-product of the decomposition of organic matter.