Let’s start with the number that frames everything else. Earlier in 2026, Waymo was giving about 500,000 paid rides a week across its US markets. Two years earlier the figure was roughly 50,000 a week, a tenfold jump. Investors love that kind of curve. In February, Waymo closed a $16 billion round at a $126 billion valuation, the largest ever for a self-driving car company. 

The sheer size of the ridership can make the expansion sound more finished than it is.

What the July 8 announcement actually says

Waymo named four cities: San Diego, Las Vegas, Tampa and Denver. It is not flipping one switch across all four at once. On its official account, the company posted that “Autonomous mode activated in four new cities!”

The rollout will happen in stages. CNBC and other outlets report that each city starts with rides for employees only, then opens to the public over the following weeks and months. The expansion pushes Waymo’s fully driverless service past 10 US markets. By May, the total area covered had grown past 1,400 square miles, larger than the state of Rhode Island.

Why each new city is harder than the last

“Fully driverless” means no human safety operator behind the wheel. The car has to work on its own from the first ride. Every new city brings a fresh set of intersections, weather, local driving habits and situations the fleet has not encountered before. That is likely why Waymo eases in with employees first.

Local officials tend to welcome the arrival. When Waymo first announced its Las Vegas plans in November 2025, Mayor Shelley Berkley called it “not a science experiment, but rather a proven, safe, new alternative” for getting around the Strip and beyond. “Proven, safe” is a booster’s phrasing, and it sits against a more complicated picture.

On the flip sides, Waymo has faced growing scrutiny from the public and regulators, including federal investigations into how its cars behave around school buses. Its safety record is strong on many measures, but “proven” is a claim still being tested in public, not a settled fact.

The million-rides target and the arithmetic against it

Waymo’s co-CEO Tekedra Mawakana has set the bar plainly. “This is an inflection point,” she said. “In 2025, we quadrupled the number of trips that we are providing.” Her goal is 1 million paid rides a week by the end of 2026. “Consumers are adopting it, the safety case is being made,” she said, though the safety case, as noted, is still being argued rather than closed.

The arithmetic against that target is unforgiving. Waymo runs roughly 3,500 robotaxis and has passed 20 million lifetime trips. An independent forecast by FutureSearch, estimates that a million weekly rides would need about 7,200 vehicles. At the current pace of adding 265 to 300 vehicles a month, the fleet reaches around 5,900 to 6,000 by year-end, enough for perhaps 840,000 weekly rides. The same forecast puts the most likely outcome near 775,000 weekly rides by the fourth quarter, short of the target.

None of that predicts failure. It describes what would have to change: faster vehicle deliveries, more rides per car, or both.