By TOM KRISHER DETROIT (AP) — The U.S. government’s highway safety agency says Tesla is telling drivers in public statements that its vehicles can drive themselves, conflicting with owners manuals and briefings with the agency saying the electric vehicles need human supervision. The National Highway Traffic Safety Administration is asking the company to “revisit its communications” to make sure messages are consistent with user instructions. The request came in a May email to the company from Gregory Magno, a division chief with the agency’s Office of Defects Investigation.