I was curious what would happen when my cateye strada passed the 9999.9 mile mark.
So I watched.
It showed 10000 (no fractional miles at this point)
I figured, Great, now I've got to reset this thing.
Then it showed 10001, 10002 and so on. And I've let it run its decimal-free course since. If I would want fractional miles on the odo, I'd need to reset it. I don't see the point in that, since I'd probably manage to screw some other setting up in the process.
I doubt I'll live long enough to put 99999 miles on any odo, but I guess the strada will go to that figure.