Bob Lutz, who has held positions at Ford, General Motors and Chrysler, penned a lengthy piece predicting the demise of the automobile era. The piece focused on one thing: cars driven by humans will not last.

Lutz recently joined CNBC’s “Squawk On the Street” to reiterate his position, and he said it may not be in 20 years as he first predicted, but the end of human-driven cars is “inevitable.” Again, he pointed to the horse as a potential path for the automobile. The wealthy and enthusiasts may keep human-driven cars on country clubs and private tracks, but eventually, legislation will take cars off of public roads for good.

“From a standpoint of moving human beings around the surface of the planet safely and efficiently, let’s face it: [self-driving cars are] the only way to go. Human beings just can’t handle it anymore.”

He also said GM is one of the automakers that “gets it” and said the automaker is doing the right thing to position itself for the changes to come with Maven and its investment in Lyft.

Whether the change happens in 20 or 50 years remains to be seen.