Norway leads way on electric cars: 'it’s part of a green taxation shift'

Nearly a third of all new cars sold in the country this year will be plug-in models and experts expect that share to skyrocket

While tourists explore Oslo's history in the grounds of the centuries-old Akershus fortress, below their feet is a harbinger of the city's future.

Here in the catacombs sit scores of Teslas, Nissan Leafs and BMW i3s, plugged into the charging points of the world's largest public garage for electric cars.