A test in U.K. shows that using smartphones makes you a bad driver, more than alcohol does. Using smartphones while driving  makes reaction times 37.6 percent slower. In fact, Smartphone innovations such as voice-enabled operation (e.g. Siri), predictive texting are of no help, requiring more of your attention. So, until an innovative in-car phone innovation, like HUD (head-up display) combined with a dictation support, comes up, watch when you use your smartphone and drive. Even so, do only one thing at a time. Other lives on the road are at stake.