Self-driving cars are an exciting idea, but they're still a few years away both for technological and legal reasons. However, there is a self-driving vehicle that's on the road today, and it's a big one.
Freightliner has launched the "Inspiration Truck," which is a self-driving semi. I've told you before about Mercedes-Benz self-driving truck, but that one wasn't planned to be on the road anytime soon. Freightliner's model is on the road right now. It even has an "autonomous vehicle" license plate issued by the state of Nevada.
The Inspiration Truck uses Freightliner's Highway Pilot system that combines radar, cameras, adaptive cruise control and active braking. The system can read road signs, traffic signals and keep the truck on the road and away from other cars.
While this is only for highway driving, that's where most long-haul trucks spend most of their time. There does need to be a person behind the wheel, but they're only there in case something goes wrong and they need to take control.