IMO the best place to this kind of studies is car shows. There are more cars at the same place so you can easily compare different cars and their solutions on aerodynamic shapes. Also at car shows you can find more exotic cars to look for where you can see more hitec solutions because costs arent so big factor for design wise than good function/aero.
Here you can find my pictures with explanations:
https://skydrive.live.com/?cid=acb1f...!342&sc=photos