Cruise CEO Dan Ammann is calling for the industry and the public to ditch single occupancy, gasoline vehicles in favor of more sustainable ways of transportation.

In a post on Medium, Ammann notes that "the human-driven, gasoline-powered, single-occupant car" is an expensive, unsustainable, environmentally damaged mode of transportation. Working with city leaders has validated Ammann's belief that "the status quo of transportation is broken, and... our need to find better solutions grows more urgent every day."

Currently, more than three in four people drive to work in single occupant vehicles, as has been for the past 20 years. Amman notes that electric vehicle adoption still remains under 1%, and that traffic accidents are still the leading cause of death for five- to 29-year olds around the world.

"To make order-of-magnitude — rather than incremental — improvements in transportation, we need to build alternatives that are superior to the status quo in every way."

Ammann criticizes ride-hailing for contributing to congestion and unsafe conditions in cities. "While these apps have disrupted the taxi industry with subsidized rides at the push of a button, they haven’t fixed transportation," he writes.

Ammann advocates for an increase in self-driving cars, electric vehicles, sharing rides.