While Nevada is a friendly state for driverless cars, the system tested is only partially automated, with a driver in the computer-assisted truck still responsible for steering. In a way, that makes this a very, very advanced cruise control. The technology, developed by Peloton Tech, uses radar and a wireless link so that the following trucks travel at the same speed, braking simultaneously for safety, and doing so on an automated system that doesn't have the delays of human reaction time. In addition, the drivers of both vehicles also have a video display, expanding both drivers' vision and reducing blind spots.