Noticed this more on longer trips than shorter ones but I pulled they key out and it felt VERY warm to the touch.
I then touched the area where I insert the key and it was so hot that I could not keep my finger on it. I called the dealer and they seemed to think this wasn't an area of concern but if nobody else has the same experience I'll take it in. Everything is working fine but I wonder if a wire is touching something and causing it to heat up. I had that happen in a computer once (a screw that was threaded too far into the hole and it was grounding to something else).
Anybody else? If this doesn't immediately come to mind please check it next time you are in your vehicle and post for everyone.