It actually happened as the Mythbusters guys said by hand starting the plane.
here is the story.
A doctor surgeon from Whyalla found his battery dead in his Piper Saratoga (a powerful single-engine aircraft) at Parafield Airport, South Australia, on the night of Aug. 26, 2001. He then proceeded to hand start the engine by
turning the prop. While this is actually not illegal, it should be approached with the utmost of caution and is really
only used in remote areas where there is no help or decent pub within a long walk. The pilot, by himself, did not chock the wheels or check that the handbrake was engaged …. Anyway, the engine fires up at about
2,000 rpm and the aircraft starts taxiing to the runway on its own. The only problem with that was there were
four piper warriors and a twin-engine Seminole (the sliced plane in picture) in its way. The pilot somehow managed
to avoid certain death, although this may have been the better option considering what was about to unfold.
At a steady rate of forward movement similar to a fairly upset hippo during breeding season, the Saratoga
proceeds to destroy anything in its path. With approx. 350 liters of avgas spewing out of the damaged aircraft,
the pilot must surely realize that an appropriate timely death is about to occur….The result is he lived, and the
University of Adelaide lost one plane and the use of the other four for some time to come, all because of a flat
battery and a really bad decision. The cost—$1.5 million and absolute embarrassment for the rest of the pilot’s life.
You can just imagine the pilot, after being run over by his own plane, hanging on to the tail of his aircraft trying to stop it going any further and watching in horror as it bit by bit shreds the tail of the most expensive aircraft in the vicinity and thinking any minute the engine will stop. Just when he thinks the nightmare is going to come to an end, his aircraft then makes a sharp right-hand turn and without conscience heads to the second-most expensive aircraft in its way.
Hope you like the answer.