Take a look at the photo again, it's not a heavy camera, it's a DSLR pointing down at the bonnet.
The size of the rig is to make sure that it's absolutely solid at speed (probably 40mph+), this looks like it's rigged for video (with the DSLR), so it'll have to keep the camera still while filming. Whereas Stink's shots are stills and mostly shot at low speeds.