Some time ago on this Forum, I was warned about a car's alarm system that could be activated during the trip because of the jostling of the car resulting in the car's battery being dead once arrival at the destination. I remain concerned about this. I have a 2020 Buick Envision that will be making the trip. If I read the Owner's Manual correctly, when I unlock the car, the alarm system is deactivated and remains so until the car is again locked. I will need to leave the keyless device in the car for the car to be moved by the Amtrak staff, I realize that. Is that sufficient? Or is there something else I ought to try to do to insure that the alarm system is not activated during the trip. Most certainly, I don't want to arrive at Lorton with a car whose battery is dead! Any other "last minute advice" anyone can offer for this, admittedly, nervous Auto Train customer?