One more thing to look out for...
"While alcohol and other drugs are sometimes also involved in the Ambien traffic cases, the drivers tend to stand out from other under-the-influence motorists. The behavior can include driving in the wrong direction or slamming into light poles or parked vehicles, as well as seeming oblivious to the arresting officers, according to a presentation last month at a meeting of forensic scientists..."
"A registered nurse who lives outside Denver took Ambien before going to sleep one night in January 2003. Sometime later--she says she remembers none of the episode--she got into her car wearing only a thin nightshirt in 20-degree weather, had a fender bender, urinated in the middle of an intersection, then became violent with police officers, according to her lawyer."