A Tesla was rolling west through Colorado’s mountains on Saturday when another motorist noticed something strange enough to call police. The person behind the wheel — and the passenger, no less — appeared to be asleep. Colorado State Patrol confirmed Monday that it received the unusual report of the Tesla traveling westbound on Interstate 70 near Georgetown. "Troopers were unable to locate the vehicle, and we did not contact it,” said Trooper Gabriel Moltrer of the Colorado State Patrol. He confirmed, “It is illegal to be asleep at the wheel.” Colorado may let the car do some of the work, but not enough for the human to take a nap. For Wyoming Tesla driver Eric Secrist, though, accidentally dozing off while the car does much of the driving isn’t hypothetical. Secrist drives Uber full time and said it has happened on the long drive home after longer trips, when he was tired and had Tesla’s “Full Self-Driving (Supervised)” system engaged. The system is a partially automated driver-assist feature that still requires a fully attentive human driver. “I just accidentally doze off, and the car just continues driving safely, driving down the road,” he said. It didn’t let him stay asleep. “It sees you dozing off, and it does wake you up with general alarms,” Secrist said. No, You Can't Take A Nap Secrist happened to be driving from Cheyenne back home to Laramie when Cowboy State Daily reached him Monday. Or, as he put it: “Actually, right now my Tesla’s driving me back home.” Tesla calls its current system “Full Self-Driving (Supervised).” It can follow curves, negotiate intersections and roundabouts, make turns, change lanes and enter and exit highways, but Tesla is explicit about what that does not mean. “You are driving Model S at all times,” the company’s current