Driverless cars give hope to visually impaired, but automakers unsure

OCALA, Fla. - In 2012, Steve Mahan, who is blind, climbed into the driver's seat of a self-driving car and rolled up to the drive-thru of a Taco Bell in a video that's been viewed more than 8 million times online. The piece, produced by Google, captured the potential of autonomous-car technology to change ...