Wow, that is crazy. I do realize you said Outback SEDAN, but even so I would have thought the people who made an "Outback" in any form would have had fold-down rear seats. Bummer.
The Saris Cycle-On Pro looks pretty cool. Though it should for it's $400 asking price - without the two bike extension that lets you carry 4 bikes. I guess the good thing about a hitch rack is that you don't have to worry as much about it working with your next car - hitches are relatively universal. Err...except for the 1.25" vs 2" thing.
In decreasing order of cost -
Saris also makes a T-Rax hitch rack which holds the bike by the frame and costs $200. The latest version even comes with a 2"/1.25" adapter thing so you can use it with both. Another nice thing about a hitch rack is no worries about the bikes rubbing against your car.
For convenience, and *if* it fits your car, Saris also makes a "Bone RS" rack which seems like it would be faster to take on and off your car. $200 though.
If you're only carrying one bike ever, the absolute cheapest option I know of is the Saris Solo ($50) -
http://www.saris.com/bike-racks/vehi...&category_id=7
My biggest concern with that would be that's there's not anti-sway bar - the bike might rock back and forth all the time, hitting against the car. All the other racks I mentioned have some anti-sway thing, and if you're near a metro area you can probably find a Saris Bones rack for not much more that had anti-sway and would let you carry 2 or 3 bikes.