Driverless Cars May Go Nowhere Unless Congress Passes Nationwide Rules

A patchwork of state laws governing the operation of self-driving cars threatens to stall their development, supporters told lawmakers as U.S. senators began consideration of a national standard for robotic vehicles. “It’s absolutely critical that we have uniform rules across the country,” Senator Gary Peters, a Michigan Democrat, said in an interview. “These are vehicles that will be on interstate highways and going across state lines.