Air Conditioner 
To dream that the air conditioner is not working indicates that you are anxious and tense. A certain aspect or circumstance in your life has you feeling nervous and apprehensive.
To see or feel the air conditioner in your dream symbolizes release of pressure and stress. You are no longer concerned or upset about a problem or disagreement
Ice Cream Truck
To dream of an ice cream truck indicates a pleasurable event may be coming your way. To dream of an ice cream truck stopping outside your door suggests a joyful moment is in imminent, packed with exciting surprises specifically for your enjoyment. Buying ice cream from a stationary ice cream truck implies a special moment to be savored. To watch an ice cream truck pass you by in a dream indicates a timing issue and is a reminder to come back to the moment and be clearer in your intentions so as to catch the next opportunity coming your way.
Perpetual Motion
To dream of perpetual motion suggests you are feeling worried and uneasy about a circumstance. You are dissatisfied with predictability and repetitiveness in your daily life, career, and relationships. You want change.