So, only 2x has this happened, both times when I've been pulling into traffic, has the car been in 'S' - suddenly light starts blinking and car is free rolling - both times luckily I put in N, then D and got back my gear but wow, is this a problem for real?

 

Is this unique unto me? Btw, 1st time was after 2big days of rain, last time was after a car wash...

 

With a 2011 car, it seems to me that you need to be banging on the dealers door right now !