The Silver State’s DMV this week became the first in the nation to give Google a license to begin testing its driverless cars, which use a combination of GPS data, video cameras, lasers, and radar sensors to get around.

The catch: Nevada state law requires at least two people in the car—one behind the wheel and the other in the passenger’s seat as a safety precaution, according to the Las Vegas Sun. A human driver can take over control of the vehicle by turning the wheel or pressing on the brake.

"...the car handles steering, braking and lane centering on its own while the driver goes hands-free.

Super Cruise uses a combination of radar, ultrasonic sensors, cameras and GPS data, and it works in bumper-to-bumper traffic as well as open roads. It’s largely based on Cadillac’s Driver Assist technology–available in some 2013 vehicles–that can automatically stop the car at low speeds before an impending collision.

GM’s plan for autonomous cars seems gradual, keeping in mind that not everyone’s ready to trust machines to drive."