U.S. push for self-driving car law exposes regulatory divide

(Reuters) — As the U.S. Congress moves quickly to pass the first federal law governing self-driving cars, some state and city officials are pushing back over fears that the measure will limit their ability to regulate vehicle safety at the local level.
The debate highlights the challenges of rolling out a new technology that does not fit neatly into an existing regulatory framework. States traditionally regulate the driver while the federal government regulates the car, but that division o