<prompt> Human: Long story short: my credit is garbage, and I desperately needed a car. So I went to one of those well put you in a car, no matter your credit places. They put me in a 7 year old sedan approaching 100k miles. Nothing really wrong with, just obviously not the car of my dreams. I recently learned how to do a loan amortization and thought I would use my car as an example. To my horror, I found that a whopping 40 of my payments are going towards principle, due to the obnoxious interest rate. So, the way I see it, I have 3 options. 1. Pay as planned, save up for inevitable repairs for high mile American cars.2. Pay a second, principle only payment every month. Which brings my payments over 550, and pray nothing goes wrong in 2 years.3. Focus on paying down what I can and cleaning up my credit, then rolling it into a new car when the late models go on sale at the end of the year. Im expecting a windfall of a couple thousand dollars and can put it towards paying down the super balance.Id be interested to hear from anyone who has been in a similar situation. Also, I drive a lot for work, so realistically I need to get out of this thing ASAP. I currently owe 11,700 and some change, KBB pits trade in value at about 5000.  <response>: You do not need to get out of it, pay it off ASAP and drive it for at least another 4 or 5 years. Its not 1978. Even American sedans can go to 150k to 175k miles these days Sounds like you are looking for an excuse for a different car. 