In all seriousness, you need to run the heater now and then to flush the coolant in the heater core. Otherwise, it can get pretty gunky. And don't forget to run the A/C, for a few minutes, whenever you drive the car in the winter. I assume the Viper is like almost every other modern car. If you run the defroster, the A/C automatically turns on. And put the windows up and down a couple of times......
Starting it and running it for a few minutes, in the garage, is not that great an idea either--but better than letting it sit all winter, I guess. It needs to be driven until the oil and water temps reach their maximum. Otherwise, you're getting differential expansion of all the metal parts. I try to do this at least every two weeks.
The diff especially needs the car to be driven, otherwise the gears sticking up above the oil level will get no lubrication and can even begin to rust. Transmission too.
And I've noticed that the tires on my 2008 are really susceptible to flat spotting. On a cold day they really 'thump' until they warm up. Best to drive the car and have it sit on another part of the tire when you get back. When we left the Viper Christmas Party it was the coldest my car has ever been in. For a minute or so, I thought there was something seriously wrong with the suspension or a tire, until I realized what the cold temps had done to the tires.
I keep my garage heated in the 40's, at all times in the winter. It's much better for the car. By the way, I was interested to read in the manual that you are NEVER supposed to start the car if it's below zero. Never saw that before in any owners manual!
You think it's hard keeping a special car healthy thoughout the winter.....you could own a classic motorcycle!
toooooooo cooold
Screw that family reunion, the club IS your family now beeotch! 
