Your Car Is Tracking You. Abusive Partners May Be, Too.

Illustration by Jeff Östberg, New York Times
Illustration by Jeff Östberg, New York Times
TT
20

Your Car Is Tracking You. Abusive Partners May Be, Too.

Illustration by Jeff Östberg, New York Times
Illustration by Jeff Östberg, New York Times

By: Kashmir Hill

Apps that remotely track and control cars are being weaponized by abusive partners. Car manufacturers have been slow to respond, according to victims and experts.

After almost 10 years of marriage, Christine Dowdall, wanted out. In September 2022, Dowdall, a real estate agent, fled their home in Covington, La., driving her Mercedes-Benz C300 sedan to her daughter’s house near Shreveport. Her husband, a Drug Enforcement Administration agent, didn’t want to let her go.

Ms. Dowdall, 59, started occasionally seeing a strange new message on the display in her Mercedes, about a location-based service called “mbrace.” The second time it happened, she took a photograph and searched for the name online.

“I realized, oh my God, that’s him tracking me,” Ms. Dowdall said.

“Mbrace” was part of “Mercedes me” — a suite of connected services for the car, accessible via a smartphone app. Ms. Dowdall had only ever used the Mercedes Me app to make auto loan payments. She hadn’t realized that the service could also be used to track the car’s location.

One night, when she visited a male friend’s home, her husband sent the man a message with a thumbs-up emoji. A nearby camera captured his car driving in the area, according to the detective who worked on her case.

Ms. Dowdall called Mercedes customer service repeatedly to try to remove her husband’s digital access to the car, but the loan and title were in his name. Even though she was making the payments, had a restraining order against her husband, and had been granted sole use of the car during divorce proceedings, Mercedes representatives told her that her husband was the customer so he would be able to keep his access. There was no button she could press to take away the app’s connection to the vehicle.

“This is not the first time that I’ve heard something like this,” one of the representatives told Ms. Dowdall.

A spokeswoman for Mercedes-Benz said the company did not comment on “individual customer matters.”

A car, to its driver, can feel like a sanctuary. A place to sing favorite songs off key, to cry, to vent or to drive somewhere no one knows you’re going.

Modern cars have been called “smartphones with wheels” because they are internet-connected and have myriad methods of data collection, from cameras and seat weight sensors to records of how hard you brake and corner.

Most drivers don’t realize how much information their cars are collecting and who has access to it, said Jen Caltrider, a privacy researcher at Mozilla who reviewed the privacy policies of more than 25 car brands and found surprising disclosures, such as Nissan saying it might collect information about “sexual activity.”

“People think their car is private,” Ms. Caltrider said. “With a computer, you know where the camera is and you can put tape over it. Once you’ve bought a car and you find it is bad at privacy, what are you supposed to do?”

Privacy advocates are concerned by how car companies are using and sharing consumers’ data — with insurance companies, for example — and drivers’ inability to turn the data collection off.

For car owners, the upside of this data-palooza has come in the form of smartphone apps that allow them to check a car’s location when, say, they forget where it is parked; to lock and unlock the vehicle remotely; and to turn it on or off. Some apps can even remotely set the car’s climate controls, make the horn honk or turn on its lights. After setting up the app, the car’s owner can grant access to a limited number of other drivers.

- Controlling partners

Controlling partners have tracked their victims’ cars in the past using GPS devices and Apple AirTags.

A San Francisco man used his remote access to the Tesla Model X sport utility vehicle he co-owned with his wife to harass her after they separated, according to a lawsuit she filed anonymously in San Francisco Superior Court in 2020.

According to a legal complaint against her husband and Tesla, the car’s lights and horns were activated in a parking garage. On hot days, she would arrive at her car and discover the heat was running so that it was uncomfortably hot, while on cold days, she would find that the air-conditioner had been activated from afar. Her husband, she said in court documents, used the location-finding feature on the Tesla to identify her new residence, which she had hoped to keep secret from him.

The New York Times



Nvidia CEO Says Power-Saving Optical Chip Tech Will Need to Wait for Wider Use 

The stage is seen after a keynote session at the SAP Center in San Jose, California, on March 18, 2025. (AFP)
The stage is seen after a keynote session at the SAP Center in San Jose, California, on March 18, 2025. (AFP)
TT
20

Nvidia CEO Says Power-Saving Optical Chip Tech Will Need to Wait for Wider Use 

The stage is seen after a keynote session at the SAP Center in San Jose, California, on March 18, 2025. (AFP)
The stage is seen after a keynote session at the SAP Center in San Jose, California, on March 18, 2025. (AFP)

A promising new chip technology that aims to cut energy usage is not yet reliable enough for use in Nvidia's flagship graphics processing units (GPUs), Nvidia's CEO Jensen Huang said Tuesday.

Co-packaged optics, as the emerging technology is called, uses beams of laser light to send information on fiber optic cables between chips, making connections faster and with superior energy efficiency to those through traditional copper cables.

During a keynote address to Nvidia's annual developer conference at a packed hockey stadium in San Jose, California on Tuesday, Huang said his company would use the co-packaged optical technology in two new networking chips that sit in switches on top of its servers, saying the technology would make the chips three and a half times more energy efficient than their predecessors.

The switch chips will come out later this year and into 2026 in a small but significant step toward advancing the technology.

But Huang told a group of journalists after his speech that while Nvidia examined using it more widely in its flagship GPU chips it had no current plans to do so, because traditional copper connections were "orders of magnitude" more reliable than today's co-packaged optical connections.

"That's not worth it," Huang said of using optical connections directly between GPUs. "We keep playing with that equation. Copper is far better."

Huang said that he was focused on providing a reliable product roadmap that Nvidia's customers, such as OpenAI and Oracle, could prepare for.

"In a couple years, several hundred billion dollars of AI infrastructure is going to get laid down, and so you've got the budget approved. You got the power approved. You got the land built," Huang said. "What are you willing to scale up to several hundred billion dollars right now?"

Silicon Valley entrepreneurs and investors have pinned their hopes on the optics technology, which they believe will be central to building ever-larger computers for AI systems, which Huang said on Tuesday would still be necessary even after advances by companies like DeepSeek because AI systems would need more computing power to think through their answers.

Startups such as Ayar Labs, Lightmatter and Celestial AI have raised hundreds of millions of dollars in venture capital - some of it from Nvidia itself - to try and put co-packaged optical connections directly onto AI chips. Lightmatter and Celestial AI are both targeting public offerings.

Copper connections are cheap and fast, but can only carry data a few meters at most. While that might seem trivial, it has had a huge impact on Nvidia's product lineup over the past half decade.

Nvidia's current flagship product contains 72 of its chips in a single server, consuming 120 kilowatts of electricity and generating so much heat that it requires a liquid cooling system similar to that of a car engine. The flagship server unveiled on Tuesday for release in 2027 will pack hundreds of its Vera Rubin Ultra Chips into a single rack and will consume 600 kilowatts of power.

Cramming more than double the number of chips into the same space over two years will require massive feats of engineering from Nvidia and its partners. Those feats are driven by the fact that AI computing work requires moving a lot of data back and forth between chips, and Nvidia is trying to keep as many chips as it can within the relatively short reach of copper connections.

Mark Wade, the CEO of Ayar Labs, which has received venture backing from Nvidia, said the chip industry was still navigating how to manufacture co-packaged optics at lower costs and with higher reliability. While the transition may not come until 2028 or beyond, Wade said, the chip industry will have little choice but to ditch copper if it wants to keep building bigger and bigger servers.

"Just look at the power consumption going up and up on racks with electrical connections," Wade told Reuters in an interview on the sidelines of Nvidia's conference. "Optics is the only technology that gets you off of that train."