Shape Layers have a few built-in effector objects such as Merge Path, Repeater, Trim Paths… Great functions to create symmetries and space offsets. Why paying for it when you can make it yourself and understand how to customize it ? 1. I have seen all over the internet these graphic transitions packs for sale, sometime for prices as high as 20-30$. If you are an absolute beginner, please start your learning by checking the essential resources below: If you used a Shape layer, it is easy, you need to get the diameter from the ellipse shape property: Add an expression to the Null Object(“Drive”). Make sure you copy the Path and not the object/mask to the position property.īecause the motion path moves the object along its anchor point, we need to offset the Y position of half the diameter of the wheel. Copy the road path from your shape layer or the mask outline to the position property of the Null Object(“Drive”). Use the pick whip to link all the car layers to the Null Object(“Drive”). Copy the position property of the front wheel to the Null Object(“Drive”). 
Doing so will require an extra step, you need to create a mask to outline the curves of the road. Start by creating the road to be used as a motion path again, the easiest way would be to create it directly in after effects using shape layers, but you can also import an external file.
The simplest hierarchy would be 3 layers: Make sure that each wheels are on a separate layer, and that anchor point is centered. You can use your own car model imported from Photoshop or Illustrator, or create it directly in AE with shape layers. This simple car rig will automate the rotation of the wheels and the orientation of the car along the motion path. Learn how to create a simple but effective car rig
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