My 2001 Chevrolet Prizm (a NUMMI) is about to hit 125,00 miles. I bought a little over 5 years ago, at which time it had ~79,000 miles on it. I bought it from a used car dealer that seemed to have put at least some money and time into maintenance.
Since then, I've done typical basic maintenance on it -- changed oil ~3k miles, got tires rotated, had serpentine belt replaced, etc. The car is still running okay, but is definitely beginning to show its age in terms of performance and general wear.
I know cars don't last forever, but I'd like to get at least 2-3 more years out of my Prizm. What maintenance items should I attend to in order to keep my high-mileage car running well?