A Texas man said the Autopilot mode on his Tesla Model S sent him off the road and into a guardrail, bloodying his nose and shaking his confidence in the technology. He doesn’t plan to sue the electric-car maker, but his insurance company might. Mark Molthan, the driver, readily admits that he was not paying full attention. Trusting that Autopilot could handle the route as it had done before, he reached into the glove box to get a cloth and was cleaning the dashboard seconds before the collision, he said. The car failed to navigate a bend on Highway 175 in rural Kaufman, Texas, and struck a cable guardrail multiple times, according to the police report of the Aug. 7 crash.