This was on August 1st, 1960, on one of the days when Marge and the cubs out cruising taking pictures for Clarence to take back to 2018 with him.
When oldest son Jed got the picture of the ambulance, he was lucky to get the timing just right...Marge was driving at 70 mph, and the ambulance coming the other way was travelling at 100 mph. Now for Jed to get it just right like that at a combined meeting speed of 170 mph, how lucky was that? And it was fortunate that Marge had picked out high speed film so the camera can be set for a high shutter speed...And a Rolleiflex camera does get high quality photos. Had it been a slower shutter speed and a cheaper camera, the picture of the ambulance would have come out blurry.