@goatsarah @helenczerski @tinaquilts
talking about the perceived rationale for building HS2.
10 years or so ago I was trying (for another government department, DECC) to get DfT and HS2 to tell me how much carbon they expected HS2 to save by displacing other means of transport such as road and air. They didn't know.
So presumably their CBA didn't account for the potential fuel savings.