WOW BMW...really? just has to follow Audi and build a Mexican plant! Well it's most likely going to incorporate what South African production did for the NA market. A large allocation will probably come from Mexico with the remainder being sent in from Germany. They're then probably going to focus South African production for emerging markets in Asia. Coupe and convertibles will still be built in Germany.
This is how Merc is doing with the W205 C Class. Refocus South African production, add the majority of US allocation to Alabama and import the remaining from Bremen, Germany.
Past:12 E92 335i/ 08 E90 335i/ 02 E46 325i
Present:15 F80 / //M3 + 15 MK VII Golf