Google unveiled a new prototype car on Tuesday, one with no steering wheel. The company's driverless car project aims to have a more polished prototype tootling around in a year or so but they're not planning on selling them. Right now, a press release makes clear, the little autonomous vehicles are just for learning. However, the end game is unwavering: fully autonomous driving.

Click on the dots to discover how a self-driving car work and what are its potential benefits.