"People get up every day and use a lot of different forms of transportation without thinking about the safety factor, and we don't want them to worry about the safety of the bus they ride on or the highway they drive on, " LaHood said.

CNN: STORY HIGHLIGHTS

But my dim recollection is that the single most important factor in selecting a stroller, besides price (particularly when you're rushing for the crosstown bus with your kid under your arm, or chasing it down the Spanish Steps), is weight.

WSJ: Cutting Edge, for Baby