From Bike Portland site: http://bikeportland.org/2011/01/13/o...reenlick-45964

Geez, the danger of having young children on bikes is not that they are on the bikes, it is because of ignorant folks in cars who think they are the only ones that should be out there.

What's next, airbags for bicycles? Crush zone bike frames? Full roll cage set ups? And, yet, there would still be the driving idiots out there. Fix the problem not the symptom.