Capture allows you to create a complex path in the drawing that will dictate the travel path of your animated objects.  Multi-point paths can be spline fit for smooth motion. 

Notice that in this example, a single path was measured, but that path has multiple velocity, and direction changes attached to it. You can also see that the symbol was swapped out at the point of intersection while on the same path.

In this example, we left the path in the drawing so you can see it. Move the slider back and forth to see the action of the red car after it gets hit by the truck.