“It must have been their nap time though for 5 of them to sit still for 3 hours in a stroller,...”
From the story: “After crossing the line in 5:45:04...”
Try 6 hours +! They had to have been hungry.
Yes, I am sorry for the typo. It wasn't stated in the article that he had helpers that followed along, but you can see them on the bicycles in the picture. And it also states that he and mom fed them in the stroller just before they started. So this was a team effort. Fortunately, babies do sleep well in the outside air, and you can see that he had a cover over their stroller and they were well dressed. Despite the palm trees it was cooler than normal this year, which at that location the heat could have been a problem. But they pulled it off.
As far as the wisdom of the idea... I don't know, but I admire any parents who raise 7 kids in this day and age. My wife and I both came from what would be considered large families these days. In my family we were born one after the other. My mom worked full time as a nurse. My dad was a home builder who worked in a family business with my grandfather and great uncle and he used to take us kids along to job sites with him. We were never dropped off at a daycare. We loved being with our dad, even though I am sure that it was very inconvenient at times. After we started going to school it probably wasn't as much of a challenge.