Copyright Walt Disney Feature Animation.
CG Maya 4.0 training, 2003.
An interesting animation & FX exercise - 3D elements over a 2D image plane for "My Peoples". There are no cues in 3D to determine where & how the car should be placed- only the topography & perspective implied in the layout.
The car and it's various parts (suspension, etc) were animated by hand in the Graph Editor.
The black & white exhaust & road dust are simple dynamics. For the gravel particles, I constructed a hill in 3D for collisions.
In the last test, the leaves on the road were instances populated selectively via Paint FX; dynamic forces were applied to those instances as car drives by.