"The vehicles we drive are getting smarter and smarter, as more and more gadgets are being crammed into them. But as those devices creep into the driving experience, they offer the driver an increasing number of displays to monitor. Thus, drivers are more distracted than ever. At the recent 'Connected Car Expo,' which was held in Los Angeles, panelists discussed how these smart car features can impair driving ability. For example, researchers led by Bruce Mehler at MIT revealed that drivers using voice command interfaces to control in-car navigation systems or USB-connected music devices can end up spending longer with their eyes off the road than those using conventional systems. You'd think being able to operate it by voice alone would be beneficial compared to older radio systems. (Tuning an older radio was used as a baseline task in these tests.) But according to Mehler, problems arise when the system needs clarification of what the driver wants, which often happens while they're trying to feed an address into a navigation system."