Si Harrison, who bought the BSA Goldstar at auction for an initial £15,800, was at the lead of the convoy on June 21.

This Harley-Davidson took the world’s first motorcycle ride powered by solar fuel. The bike motored along the shores of Switzerland’s Lake Zurich thanks to a new type of sustainable energy.

That was the answer of Jon Waring, 57, and his partner Lucy, 48, when they woke up to discover he’d won the £3.9 million ...