I remember running with babies. I have 3 kids, all 3 years apart (because I'm a good planner...) so I had a baby and a toddler in a double jog stroller like this for years. I remember that it was heavy and hard to push up hills. But hey, it got us out of the house.
Kudos to the babies, and the mommy who gave them cool sunglasses, and a free ride.