Regen always goes into the battery.
But when you are in hold mode, regen is considered gas miles, because gas was used to build up the energy that you are recuperating during regen.
I don't understand what you are asking with " same question when the battery is at zero miles? "
may be you can elaborate.
But when you are in hold mode, regen is considered gas miles, because gas was used to build up the energy that you are recuperating during regen.
I don't understand what you are asking with " same question when the battery is at zero miles? "
may be you can elaborate.