E-bikes have become very popular in Orange County, where teens and tweens rely on the often-powerful vehicles to traverse long distances in spread-out suburbia. But their popularity has brought an alarming increase in serious injuries, especially among young riders. Jill Replogle reports.

<p>E-bikes have become very popular in Orange County, where teens and tweens rely on the often-powerful vehicles to traverse long distances in spread-out suburbia. But their popularity has brought an alarming increase in serious injuries, especially among young riders. Jill Replogle reports.</p>