<p>This is what you'd see if the diffuser was removed from the car. And if it was a real car, of course. 
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IMG_0083
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/9998127@N06">Bill Abbott</a>
CC BY-SA 2.0
<p><a rel="nofollow" class="external text" href="https://www.flickr.com/photos/wbaiv/7996553832/">Engine, transmission, suspension, exhaust, from below</a>
</p>
<ul><li>Uploaded by <a href="//commons.wikimedia.org/wiki/User:FAEP" title="User:FAEP">FAEP</a></li></ul>