The Telegraph says the Segway company owner died riding his two-wheeled machine off a cliff

The multi-millionaire businessman, 62, fell into the River Wharfe while inspecting the grounds of his North Yorkshire estate on a rugged country version of the Segway.

Inspecting the grounds of an estate sounds a lot like the modern equivalent of a horse-riding accident. The sad irony is that the man who died made his fortune by selling security perimeter equipment to protect soldiers from harm.