‘Number two’ bus hits the road

Britain’s first “number two” bus has taken to the road — powered entirely by human and food waste.

Bio-Bus, a 40-seater shuttle service between Bath and Bristol Airport, can travel up to 298km on one tank of gas.

The gas is generated through the treatment of sewage and food waste that is unfit for human consumption. Engineers believe Bio-Bus could provide a sustainable way of fuelling public transport while improving urban air quality.