I have 1 year until my used Saab is paid off, and the Prius is #1 on my list...with the civic hybrid #2.  I drive about 80 miles round trip a day. 
  
We don't drive my wife's SUV other than her going to work.  It's not worth it, even though its a newer car.  It gets about 1/2 the mileage of mine.  Luckily, she just accepted a job that's 5 miles from the house, unlike her 70 mile a day current drive.  It makes a difference when you add it up. 
  
The gas hikes have been prison raping me lately.