As my 10-year-old Prius nears 140,000 miles on its odometer, I am not happy to think about having to pay $30k for a new car when the time comes. I'm hoping it will be another couple of years before it needs to be replaced, but still. It took long enough to pay off this car, and it cost < $25k. (It is a great car and I'm very happy with it. It's nice to feel like a major purchase decision was a good one.)