What, is this a Toyota?????

[Rootripper]

My wife started my E 53 3.0 selected reverse and the X took off, fortunately she had her foot on the brake and got it stopped, into Park, and turned off. Restart was ok. Also did it in drive when leaving home but not as bad, she kept going. Only recent change was tuning off "drive away locking" with obd II. Car was cold, not warmed up, service engine code for thermostat stuck open, which was also cleared with obd II. I drove it when she ran screaming from the car upon her return. Drove fine for me, but that's a scary situation.
Anyone heard of this one?
Thanks