Over Christmas I started riding the Brompton occasionally with both kids on board. At the time, and again now, I noted that this almost certainly voided any manufacturer warranty and was nothing that I could in good conscience officially recommend, etc. etc. I’m not sure how much it matters anyway, as the Brompton is not the cheapest folding bike, plus the IT Chair required to ride with a kid in front, which is awesome, is laughably expensive. We were only comfortable dropping that kind of dosh to celebrate my promotion last year. So this option is not likely to appeal to lots of people.
But it seems I’m not the only person to think about ways to squeeze a couple of kids on a folding bike. At my son’s after-school program, one parent is doing it on the cheap. I was awed when I saw this folding bike, which offers a way to haul a rider, two kids, and a fair amount of a cargo in the front basket, with even smaller wheels than the Brompton, and with parts that looked like they could easily be scored secondhand. I wouldn’t call the results pretty, but you know what? This bike could be put on a city bus and take up less room than a folded stroller, and I’m guessing the total rig would cost very little even if assembled brand new. Well played, mystery parent. Well played.