Okey, here it is.
I have. System> Every random(0,3) seconds > System>create object car on layer 1 at (random(104, 497), -137
That's cool, i like how they are created, but sometimes they are created on top of each other.
I want the create event to check, if object car is created on random X, create at another X. So when the object is created, its not created so it will overlap previously created object.