DETROIT — General Motors has corrected an online advertising campaign that overstated the capabilities of its Super Cruise driver-assist system.

This week, ads for the system, available on a growing number of Cadillac vehicles, appeared with a headline that said “Cadillac Super Cruise – Experience Autonomous Driving.”

But the system is not autonomous. It always requires a human driver who maintains responsibility for all vehicle operations.

The advertisement can be found with a number of search terms and now reads: “Cadillac Super Cruise — The Future Of Driving.” A Cadillac spokesperson said the mix-up was inadvertent.

“The ad in question was launched in error and has been removed,” he said. “Super Cruise is a driver assistance feature and should always be referred to as such.”

It’s not the first time in the industry such an oversight was made. In a 2016 television ad, Mercedes-Benz placed its then-new E Class alongside a futuristic self-driving concept and asked “Is the world truly ready for a vehicle that can drive itself? Ready or not, the future is here.” Mercedes-Benz pulled the advertisement after complaints.

More recently, a German court ruled in July that Tesla’s Autopilot name for its driver-assist system misled consumers into believing cars could drive themselves.

Across the auto industry, there are no cars currently being sold to consumers that are “autonomous” or capable of self-driving operations. Driver-assist systems such as Super Cruise, Autopilot and Nissan’s Pro Pilot contain Level 2 automation, per SAE standards, whereas self-driving is classified as Level 4 and beyond.

Yet there’s growing concern from safety advocates that advertising can blur the line between driver-assist systems and self-driving ones. The difference between the two can be a matter of life and death. Crash investigators have cited an overreliance on driver-assist systems as a cause in several fatal crashes where Autopilot was involved.

The distinction is perhaps growing in importance as more cars equipped with advanced driver-assist systems reach the road. This year, Cadillac announced Super Cruise would expand to 22 vehicles in its lineup by 2023.