Gear storage in cold environment

Is there any harm that could befall one's gear (i.e. reg, full tank, bc, etc.) from storing it in a cold environment overnight (e.g. in the back of a pick-up truck in sub 0C temps.)?
I did this the other night, and was concerned not only while it was out there, but also when I brought it inside the next day (after the dive was cancelled) in case the warming up quickly of the gear caused condensation inside the hoses, for example.
Any opinions on this?

Thanks, guys, for all the replies...LOL - I found info on this in another forum (sort of).