Okay in light of the terrible accident that occurred down the street from my place

Story link

How do our cars react to…

A. putting the tranny in neutral (when the engine is at full throttle)
B. turning off the ignition (again at full throttle)

These would be my 2 top defenses against a run away car but apparently these did nothing for this guy and his family in their Lexus. Anyone have to do this in their Crossfire? It just got me to thinking what would I do in that same situation.