Meet 29-year-old Devamsha Gunput, who completed 75 Hard last March whilst working full-time as a digital consultant for a large corporation. "It was definitely hard," she tells the BBC.

Powering it is the same 6.2L supercharged V8 that still males 645 lb-ft (875 Nm) of torque and 710 hp (720 ps/530 kW). It has a 180 mph (290 kph) top speed, does naught to sixty mph (97 kph ...