Another option would be to rent some space for the winter for the SRT-6 with a friend/neighbor that has a 2 car garage and only one car. Keep the Malibu in your garage for daily driving until summertime. A good friend/neighbor won't even charge you for the space. Hey, give it a shot. Of course, if insurance is killing you, then consider going with no-collision coverage during the winter (and don't drive it), then switch back to full coverage in the summer/fall for the SRT-6. Liability-only coverage is only a couple hundred a year.