I don't have the option. There have been in a few situations in which I would have appreciated ACC, but mostly I'm quite pleased to have avoided it. Like the rear TV's and Nightvision, I'm overall glad I didn't spend the cash on these features.
F10 '11 (August 2011 build) 535i Titanium Silver on Oyster/Black Dakota, Antracite wood. Sport w/SAT,
DHP, IAS, Premium 1 & 2, HUD, Convenience, Driver Assist, Vent Seats, 4-zone, Folding Seats, Apps.
Retired: E46 '02 330i Steel Blue on Black. Oct '01 - Jul '04.
BMW CCA, Golden Gate Chapter