Ford has developed a prototype vehicle known as the Automated Fusion Hybrid Research. This vehicle doesn’t just provide you with cruise control. It has the ability to regulate and maintain its speed on its own; and may even stop when you are moving too quickly to an object. It can also steer back into its lane if a driver lets it drift and parallel park automatically. To accomplish all these, this self-driving car has four infrared devices mounted on it. The devices use Light Detection And Ranging (LiDAR) technology to scan the surrounding environment at the rate of 2.5 million times per second and as far as 200 feet. And data collected is then interpreted into a 3D image of things happening around the vehicle.
From the way I see it and I believe you concur, this vehicle will relieve one from the stress of driving himself on a long distance trip.
Source: CNET.