There's also more to this than meets the eye- just like I said earlier. It is a government supported investment! So, basically, it's incentivised by a 200 million government handout!! It's a bit like the current Octopus 7ppkwh off peak rate- at some point it will all end!
"Future of Roads Minister Lilian Greenwood said: “Business has a crucial role to play in decarbonising our roads, and that’s why it’s fantastic to see Amazon place the UK’s biggest ever order of electric trucks, supported in part by the Government’s £200m ‘Zero Emission HGV and Infrastructure Demonstrator’ project. This comes on top of our £2.3 billion to help industry and consumers switch to electric vehicles, supporting jobs, attracting investment and making Britain a clean energy superpower.”