Don't park it, just keep driving. Other than parking it inside I can't think of anything that would stop all moisture. Air movement and a heat source (maybe a drop light) would help.
1953 Chevrolet 3600 Fried Green T'mater (Vern) In the Stovebolt Gallery Caution: Political Statement Man who runs in front of car gets tired, man who runs behind car gets exhausted.
Other than parking it inside I can't think of anything that would stop all moisture. Air movement and a heat source (maybe a drop light) would help.