well mine is in miles so guess it is the US version (yes)
and for those that may not know it does matter what CD you have for you see the sharkport only edits your save files which tells the system what cars you have, color, settings etc. The true 3d models and textures etc are stored on the CD. So even if your memory card refers to a lambo if your CD does have the model on the disc then you can't get it.
Someone correct me if i am wrong, but i doubt i am.
Anyway atleast i am glad that i have the models on my disc (i want to drive the stratos so badly)