Radio/tape Cd Player problems of the 2011 Nissan Altima

Hello,my question pertains to the Nissan Altima and maxima. May I preface my statements with the fact that I owned a 2005, 2009 and 2011 Nissan Altima and while I traded my last one in for a different make, I had very much enjoyed the vehicle until I found out there was a dangerous flaw in the Altima and, I was told by Nissan, the maxima. In my 2011 Altima, a serious panic stop, locking up the brakes, caused my vehicle to not move for 3-5 seconds. This happened several times and I had my local dealership look at the vehicle each time and each time I was told there was nothing wrong with the car but it reoccurred . After responses from the dealership went nowhere, I called the main Nissan customer service line and was told that the problem was in the transmission of both vehicles. The special seamless transmission will cause a 3-5 second delay after a panic stop but it was normal for that type of transmission. When I asked what to do if that occurred on a freeway with a truck barreling down on me they had no answer. Not satisfied with that response I called a local radio auto talk show and was referred to a local auto shop as he had never heard of that specific problem. The local auto shop checked the vehicle and also said there was nothing wrong with the car but when I took the owner of the shop out he experienced it. His response was that this was the first time he had heard and experienced it but unless there were a lot of complaints for that specific problem nothing would happen. I now throw out this issue to you. Has this been a reported issue? is it still a problem? after my experiences I felt very unsafe in the car. We won't go into the response I receive from Nissan customer service or that lemon laws do not apply to this issue since the vehicle was deemed okay and nothing fixed. My writing to you is because these models received awards for safety.