Mac TN, worth checking with another dealer. It seems like once pushed, mine resolved the issue pretty easily with an update to the top module software. Agreed that my $80,000 E93 M3 did have this feature, but I rarely used it. Let's face it, most of the time I did it, it was to impress onlookers and I expect it will be the same on the Mac. Annoying if your car can't do it, but personally wouldn't impact my enjoyment. I did use it the other day in a parking lot....kind of cool to watch the top mechanism from outside the car. What I really need is some top down weather here in Chicago. I'd trade that for this feature...