going through your dream let's us know that failure is not an option! let me interpret it with my own thoughts that came in my mind...
first of all the car that you were driving in is one way the life is taking you, the parked vehicle are the obstacles in your way, the scooter with no seat implies other opportunity but with difficulties in its way, the car sliding down the slop implies if you had been on that track in your life you must had a big loss in business or something...