At 120mph (just a little slower) you are doing a mile every 30 seconds.
That means the 1/10 digit should rotate 1 digit every 3 seconds. The
shutter speed on most digital cameras is  less than 1 second. That is
sufficiently fast so that the digit wouldn't be blurred.

On Dec 6, 2004, at 3:43 PM, Don Spence wrote:

> Yeh... and another thing. At that speed, that last odometer digit to
> the right would be spinning so fast it would be blurred. : >