Now we have this thing called a video camera which makes it a lot easier to get the shot.Congratulations on your milestone! Pun intended.
When I was younger (and more foolish) I used to do this stupid thing where I'd try to take a picture of the odo at exactly 100k with the spedo at 100 MPH. It's harder to do than it sounds. But carrying on with my tradition, you should have been going 200 mph!