Crash 
To dream of being in a crash or something crashing around you implies that you have finally been able to overcome an obstacle or hardship. It may also symbolize anxieties you have regarding becoming the victim of an accident.
Planet
To dream of a planet symbolizes innovation, discovery, and new adventures.
Jar
To dream of an empty jar symbolizes poverty and tribulations.
To see a full jar signifies triumph and success.
To see a broken jar in your dream means sickness and misfortune.
Mars
To dream of Mars indicates that you will be betrayed by close peers. This will cause you great anguish and despair for a long period of time.
Drop
To dream that you are dropping things suggests that you are relieving yourself of some job, companionship, individual, or notion. You should pay attention to what it is that you are dropping. Also, this dream could indicate your recklessness. You may be wishing you didn't let something get away from you.
Jets
To dream of a jet flying overhead foretells business failures and shocking news from old friends.
North
To dream of the direction north symbolizes realities in your life. It also suggests that you are moving forward and making progress in life.
Shock
To dream that you receive a shock symbolizes your abrupt comprehension of a situation.
Wreck
To dream of a wreck symbolizes barriers and obstacles that stand between you and your goals. You may feel that you are not making any progress and are being held back. Consider what obstacles are present in your waking life.
Train
A dream about a moving train signifies the current journey you are on. If you feel scared or have motion sickness while in the train, it indicates that you are sorry about something, and that you have some obstacles you need to overcome soon.
To see yourself on top of a stationary train car, it means that you will make a journey with an unpleasant companion, with whom you will end up over spending and waste excessively thus hurting you financially.
If you see railroads without a train in your dream, it means that you will gain direction and happiness in an endeavor you have recently decided upon.
On the other hand, to be on a train moving smoothly along without a track, it indicates that you will be worried over an affair which could eventually benefit you later for a better life.
Seeing a freight train in your dream, it is an omen of changes which will lead to your elevation.
Spiral
To dream of a spiral implies that you are losing your grip on an issue or circumstance in your life. It is developing into a major problem. It may also represent your imagination and artistic nature.
Airbag
Dreaming about an air bag symbolizes the presence of protection and safety at the moment in your waking life.
Alternatively, if you dream about seeing the airbag deploy in a vehicle, it is a sign of warning that you're about to get hit with a major setback if you continue the current pace in your life.