[aerohead]

The late-model Corvette uses a glass" fairing" which tapers both in plan and elevation to clean up the wake behind the cabin so air will hit the top of the "trunklid".Since these cars are driven flat-out on the Autobahn they need the downforce and directional stability of the high-drag ,enormous tail,especially in inclement weather.The "boat-tailed" rear windscreen has the shape of the cap on my truck and where Chevy uses it for speed,it cheats the gas pump a bit for me.On a notchback car,such a fairing would block access to the trunk,so provision would have to be made to tackle that animal.