Planning ahead to winter trips will my waste water tank (mounted under the van) freeze in winter (I assume it will) and if so how do you stop it freezing etc etc .. Also I would imgine that our bed above the garage will get cold due to cold air in there. I have thought about fitting an extra blown air outlet in there to keep the scooter warm and snuggly, and to warm the bed from below. Any thoughts / experience on any of the above ?? ..