Lyft and Aptiv have completed 5,000 paid trips in their self-driving taxis

Lyft and self-driving technology company Aptiv have been operating a small fleet of self-driving cars in Las Vegas since the Consumer Electronics Show last January. And today, the companies say they’ve reached a new milestone in their partnership: 5,000 paid rides.

Lyft and Aptiv claim to be operating the only commercial robot taxi service in the US, and perhaps the world. And while there are a number of ride-hailing pilots taking place around the country — Waymo in Phoenix, Cruise in San Francisco, Voyage in Florida — none are yet charging customers to ride in their self-driving cars. Waymo is expected to launch a commercial ride-hailing product in Arizona later this year.