aerohead only posts on the weekends so let me give it a try:
1983 Ford Probe IV Concept - conceptcarz.com
Quote:
One of Probe IV's most distinctive features are its fully-skirted wheels and tires which utilize membranes between the outer covers and the body. The membranes flex when the front wheels are turned and allow Probe IV to be driven normally, but drastically reduce wheel well turbulence and resulting aero drag.
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BMW proposes a morphing skin:
BMW's New Concept Car Features Morphing Skin, Beast Mode. Sorry, Boost Mode.- Core77