The idea of this ad was to have the car driving down this impossible ramp. We did a few full size sections and a large model of the ramp itself to comp the car into.
We kept the design reasonably simple to make it easier to make a full size section and the model to match. The full size was set up outside as a test then properly set up in the studio for the shoot.
The model ramp was shot motion control with the car put in later. It was all built out of wood and plastic pipe.