Four years ago, Daimler AG dazzled with a self-driving luxury lounge in Las Vegas with a concept vehicle boasting a sleek interior that promised to pamper its well-heeled passengers into the automotive future.
This year the Mercedes-Benz maker is back at the annual consumer electronics show CES, though with a more utilitarian slant: a bubble-shaped autonomous shuttle designed to reliably ferry people and goods around town at limited speeds.
