What does a luxury car look like when there's no need for an engine, or a driver for that matter? The Rolls-Royce Vision Next 100 Concept is one answer. This pure concept car is fully autonomous and zero-emission, yet would still be hand-built to the specifications of its owner. A virtual assistant named "Eleanor" (after the model for the company's signature Spirit of Ecstasy) handles everything from setting your destination to reminding you of your daily schedule and briefing you on any meetings you might have. A transparent OLED screen sits in the front of the cabin to show you information or entertainment, which you can enjoy from the silk-covered couch. Finally, there's the glass roof that "flows fluidly as a daring fastback, creating a glass canopy over the occupants that provides privacy whilst allowing them to contemplate the majesty of the stars in the firmament above as they glide through the night; a window on the world ahead before resolving itself into the bonnet of the car," according to Rolls' not-at-all-pretentious press writer.