Adaptive Equipment problems of the 2014 Ford Edge

On 9-27-14, using adaptive cruise control on straight, 4-lane divided highway with no traffic in lane ahead or behind. Vehicle's brakes suddenly activated dropping speed from 74 to 50 mph. Taken to dealership 10-7-14 and issue could not be duplicated. Happened again on 11-11-14 with same roadway & traffic conditions, this time 55 to 50 mph drop. Taken to dealer on 11-20-14 and again no issues were detected with the vehicle. Contacted Ford customer service who said to take it back again to generate a "hot line" complaint for an engineer to look at the vehicle. Took vehicle back 12-3-14 and left it so they could drive it for a few days and try to duplicate the issue (they supplied a rental). Called after 2 days and said an engineer "happened to be there looking at another vehicle so they looked at mine". No issue found, but they did a reset of the system. The entire time they had the vehicle, it was driven a total 6 (six) miles. Also, adaptive cruise is set as a default and cannot be changed. If you turn the "adaptive" feature off, it goes back when you start the vehicle again.