Thanks for the steptronic.pdf. will spend some time with it later in the weekend. meanwhile, the manual (at least 2010's) mention the cc stalk past resistance point for larger incremental changes (up to 5 mph each) but there is no mention of the brakes being applied for rapid cc deceleration. I have the electronic manual downloaded and tried to copy this section to post but is in protected pdf format and won't allow copy w/o password. If you want to see it, download from BMW and see page 70.

The reason it surprised me is that I did not think the cc was dynamic (w/o distance control). so when it first happened, I was surprised and went to read about in the manual. When I saw nothing in manual, I had to play with the feature a bit more next time on highway to see what the car does in different circumstances that is NOT in the manual. While the manual is better than most manuals I have had for vehicles, it still leaves much unsaid.

One of the possible downside perceptions I am seeing in BMW is the Buyer Beware attitude that seems to permeate the sales, service and production of these cars. While I haven't tried to make a list, it is starting to feel like there is a bunch of stuff not really communicated to customers (or even available to customers who may not know to ask, ask someone else, and then research and verify to see if there isn't anything still missing on any particular point). In this case, the dynamic aspects of brakes application in cc is a nice surprise. Not all of the "unmentioned(s)" are so.

Overall, after first week, I am impressed with and like the vehicle. And, that seems to be consensus - if you like the vehicle... (sort of implies the ends justify the means - and there appears to be a-l-o-t of means being justified by that end).

Thanks again for all!