A really good back story would be 300,000 miles and nothing other than routine maintenance.
Then I guess I have a really good backstory.
Bought the car used, CPO with a couple thousand miles on the clock, in 1996. Since then, I've taken thousands of trips so short that it hardly had a chance to get up to temperature, and I've driven 1000+ miles in a single day dozens of times. For many years, I was hitting 100MPH every day, weather permitting.
Through all that, its engine and transmission have never been opened. Everything works, there isn't a single interior rattle or buzz, the gears don't grind, and the engine is still perfectly happy being revved to nearly 8000RPM on a regular basis.
Those of you who were on the NSXchange mailing list twenty years ago might have seen the car when I attended Harry's San Francisco event, a few months after I bought it. It looks essentially unchanged. The paint has darkened a little over the years, but it's not oxidizing or chipping even though the car's been buried in snow, driven through the Mojave desert in the summer, caught out in violent hailstorms, covered in mud, and left outside to bake all day in the San Diego sun five days a week for five years.
My maintenance routine: I follow Honda's maintenance schedule, except I replace the motor oil (Redline, if it matters -- I think it does) every 3K, gear oil every 60K, and I do the 90K service every 80K. I replace the clutch every 120K miles, hoses every 15 years, battery every 6 years. I also try to change the tires before the cords start to show, and I wash it every once in a while.
Shocks and tie-rod ends have been replaced twice, pads and rotors have been replaced a few times, radiator was replaced when it developed a leak after 16 years. When my changer's CD magazine started ejecting on bumpy roads and the head unit's "next track" button started to stick, I replaced the changer and head unit with used OEM units from this forum's marketplace. Carpets and seatcovers were replaced ten years ago with barely-used OEM pieces from one of Mark Johnson's cars.
... and that's basically all I've had to do. Looking forward to another 300K miles.