Possible Clues:

• Tendency to remain at rest or in steady motion
• Reluctance to move shown by train, i.e. after crash
• Lack of action, but in time it turns up
• Why one doesn't move it back inside in time
• Disposition to remain inactive
• State of train that is broken down
• A disinclination to act in opening of Educating Rita, possibly
• Passiveness
• 'Strenua nos exercet -' (Horace)
• Stagnating state - in time it is in recession