I saw this video for BMW's new "GINA" concept car and was really blown away. The skin of the car is made of fabric with arms underneath to control the contours of the design. It is worth watching just to see the headlight open at 2:18. Wow!
Benefits beyond style include some serious weight reduction, and the ability to change aerodynamics on the fly to best match your speed and performance requirements. Perhaps $4 gas is just the ticket for a real automotive revolution.