I think I've shared this before, but a long while ago......
I did the same with my Datsun 240Z way-back-when. I pulled over when the odo was at 99,999, and took a picture. When I showed the pic to a friend later, he commented, "Hey that's pretty cool that you managed to syncronize the trip odo to show 240 at the same time. I was totally surprised! It was never planned and was a total coincidence.