Handing your kids the car keys can be a trip to the unknown. “The greatest fear for any parent is when your son or daughter gets a driver’s license and they leave the house,” said John Jacobson of Leawood. “You have absolutely no control over what’s going on.” But parents like Jacobson are grabbing some of that control back with technology that makes them virtual backseat drivers. It’s technology that has been used for years to follow trucks or diagnose engine problems, only now parents are using it to monitor their kids’ driving habits. Jacobson, for example, uses global positioning...