Picked up my 6FL cable at lunch as well. I think Led's "caveman" statement sums it up. it's SOOOO easy to use.
One interesting thing....my CA said there was a meeting trying to figure out who was going ot pay for it (within BMW)....sales dept, parts depts, BMWNA. They (dealer) are annoyed that it's not part of the package. The retail for the cable is $50!!!! For a ~$400 option, u'd think it's be all in.