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Alphabet's self-driving car unit is attempting to halt Uber's own efforts with a preliminary injunction, claiming it stole its technology, but the ride-hailing company is pushing back. It's argument: Its cars currently on the road are using LiDAR tech from vendors, namely Velodyne—not sensors built in-house.

Not the same: Uber also provided a detailed description of the custom LiDAR design it has been working on, including how it differs from Waymo's. Uber also noted that it has been developing LiDAR designs since before its acquisition of Otto, the startup founded by former Waymo employees, and provided a description of that technology as well.

Remaining questions: It's still unclear why Levandowski, who has pleaded the Fifth to avoid self-incrimination, downloaded 14,000 files and attempted to hide that fact. The court also still has to decide whether to move the lawsuit to private arbitration, as Uber has requested, citing the arbitration clause in Levandowski's employment contract.

Go deeper

Netflix tops 200 million global subscribers

Illustration: Rebecca Zisser/Axios

Netflix said that it added another 8.5 million global subscribers last quarter, bringing its total number of paid subscribers globally to more than 200 million.

The big picture: Positive fourth quarter results show Netflix's resiliency, despite increased competition and pandemic-related production headwinds.

Janet Yellen plays down debt, tax hike concerns in confirmation hearing

Treasury Secretary nominee Janet Yellen at an event in December. (Photo: Alex Wong via Getty Images)

Janet Yellen, Biden's pick to lead the Treasury Department, pushed back against two key concerns from Republican senators at her confirmation hearing on Tuesday: the country's debt and the incoming administration's plans to eventually raise taxes.

Driving the news: Yellen — who's expected to win confirmation — said spending big now will prevent the U.S. from having to dig out of a deeper hole later. She also said the Biden administration's priority right now is coronavirus relief, not raising taxes.

Trump gives farewell address: "We did what we came here to do"

Photo: Mandel Ngan/AFP via Getty Images

President Trump gave a farewell video address on Tuesday, saying that his administration "did what we came here to do — and so much more."

Why it matters, via Axios' Alayna Treene: The address is very different from the Trump we've seen in his final weeks as president — one who has refused to accept his loss, who peddled conspiracy theories that fueled the attack on the Capitol, and who is boycotting his successor's inauguration.