P38A A strange thing

Just thought I would mention it, this has probably never happened to you, but worth mention I think, about 4 or 5 years ago, (it was a very cold winter and freezing outside) so that could have been the problem for the reason this happened, anyway at the end of the day at about 4pm, got into the RR ready to go home, it was in park, started it up, with my foot on the brake, and it had automatically engaged gear and tried to move off, I immediately turned the ignition off, went through the park, drive, and then park again, started it up, and all was normal, has this happened to anyone else?

Only if I lift my foot off the clutch will let you know when I get the auto on the road.