Don't store your gear in the car.
Let all your stuff dry, especially your gloves, before packing it back up. Plus, what if you ride the next day? You gotta make sure everything dries up for the next shred session.
You should also make sure to wipe off the edges of your board after every trip to ensure they don't rust. Snow/ice in the crevasses of the the bindings isn't really a big deal, but I always wipe my board down as best as I can and then prop it up in my garage to let everything drip off. I'll then wipe off any remaining water later in the day.