Apparently a lady ultra-marathon runner in the recent Liverpool-Manchester 50mile race took 3rd place, and then posted their Strava data somewhere that others could view it - where it was then obvious to anyone used to viewing this data that she'd jumped into a car for 2.5 miles (moving at about 35mph with heart rate dropping to 90bpm, and cadence dropping to 0 steps per minute).
They have now been appropriately disqualified, but it's somehow rather sweet that they apparently exposed their own cheating.