The Obama administration will announce efforts to boost self-driving cars on Thursday, according to government officials. Mark Rosekind, head of the National Highway Traffic Safety Administration, told reporters that Transportation Secretary Anthony Foxx will be in Detroit to talk about administration efforts to speed the introduction of self-driving vehicles. There is not yet a clear legal framework governing the presence of driverless cars on U.S. roads. Automakers and technology companies such as Alphabet Inc's Google have called on regulators to clarify guidelines for introduction of autonomous driving technology, in part out of concern that a mishap involving a self-driving car could result in costly litigation.