Age: 37 Occupation: Pediatrician, University of Washington Medical Center Hometown: North Carolina Residence: Ballard Wheels: MADSEN cargo bike, Dutch Azor Transport, Specialized Globe Live 02 Ditch your trailer. That is Julian's advice to parents who want to ride with young children. You may wonder what type of Kool-Aid Julian is drinking, but you have to listen to a guy who can transport four kids on a bicycle. Julian loves biking with his three-year old daughter, Drew, upfront -- instead of in a tow-behind trailer. "We have some of our best conversations up there, and she gets to see more than my backside. It is much more enjoyable than listening to her cry or complain in a trailer." Solutions besides trailers do work. Like the Bike-Tutor from the U.K. that mounts on the top tube. Or the Bobike Mini, which mounts on the stem, for children aged 9 months to 3 years. Julian recommends both products as superior child carriers, but is also partial to cargo bikes like xtracycles, Dutch bakfietsen ("box bikes"), and MADSEN "precious cargo bikes." Julian has also installed bench and bucket car seats, complete with five-point buckle system, onto his MADSEN cargo bike. I ask how heavy the bike is. "Heavy? Are you calling my bike fat? I prefer strong-boned. She's as heavy as she needs to be."