I think the more miles my car has the more power it has. I know at some point it will reverse. I had a bike that made more power on the dyno when it had 50k than it did at 3k. So, I know it is possible. I guess it's all in how you maintain it. My car has 165k now and runs great! It used to feel slower than a Civic, now it feels like it might actually give it a run for it's money. 
