by Rachyl Jones at Fortune
ON FEB. 1 LAST YEAR, Montana residents gawked upward at a large white object hovering in the sky that looked to be another moon. The airborne object was in fact a Chinese spy balloon loaded with cameras, sensors, and other high-tech surveillance equipment, and it set off a nationwide panic as it drifted across the midwestern and southern United States. How much information the balloon gathered—if any—remains unknown, but the threat was deemed serious enough that an F-22 U.S. Air Force jet fired a Sidewinder missile at the unmanned balloon on a February afternoon, blasting it to pieces a few miles off the coast of South Carolina.
Since 2017, self-driving cars owned by Chinese companies have traversed 1.8 million miles of California alone, according to a Fortune analysis of the state’s Department of Motor Vehicles data. As part of their basic functionality, these cars capture video of their surroundings and map the state’s roads to within two centimeters of precision. Companies transfer that information from the cars to data centers, where they use it to train their self-driving systems.
The cars are part of a state program that allows companies developing self-driving technology—including Google spinoff Waymo and Amazon-owned Zoox—to test autonomous vehicles on public roads. Among the 35 companies approved to test by the California DMV, seven are wholly or partly China-based. Five of them drove on California roads last year: WeRide, Apollo, AutoX, Pony.ai, and DiDi Research America. Some Chinese companies are approved to test in Arizona and Texas as well.
Fitted with cameras, microphones, and sophisticated sensors, self-driving cars have long raised flags among privacy advocates. Matthew Guariglia, a policy analyst at the digital rights nonprofit Electronic Frontier Foundation, called self-driving cars “rolling surveillance devices” that passively collect massive amounts of information on Americans in plain sight.
In the context of national security, however,…