Its not the designers fault, its the engineer or group of 1000 engineers that it takes to figure out how to make your life a living hell...lol. The designers just make it look pretty on the outside, the clay modelers (like myself) make it a reality and the engineers come in and tell you it can't be done and screw everything up. Trust me, I've had my fair share of cursing at GM's engineers. Have you taken off the front bumper lately?
And don't get me started on that rear diffuser. Sorry, just thought this would be a good opportunity to vent...lol