Here's my rendition of the next Z4 (Z5?) based off of the prototypes we've seen and me just adding some changes here and there. It's also not finished.
Past:'08 E92 335i|ZPP|ZSP|6AT|four (4) HPFPs
Present:'15 Mustang GT|401A|PP|6MT|Recaros
Sig pic unrelated. I like to go sideways and stuff.