Speaking to a member of the public at the end-of-the-journey event, Boorman said the charging wasn’t too difficult, although they did sometimes have to rely on locals with generators in the wilder parts of their journey.

Once they got into the US charging stations were apparently plentiful, enabling them to up their average daily distance to 300 miles from around 150 while they were in the south.

For much of the journey they were followed by petrol and diesel-powered vehicles, which ferried battery packs around to keep the bikes topped up.