He never wrote the software. He runs the company that turns 5 trillion images into ground truth for the machines that will drive us.
There is a warehouse of reality being built in Hudson Street, and its inventory is every pothole, every near-miss, every rain-slick left turn ever caught on a windshield. Zach Greenberger is the person deciding what it is worth.
Ask most people what Nexar does and they will point to the small camera stuck to a windshield. Greenberger will correct you politely. The hardware was always a means. What the company actually holds is one of the largest crowdsourced records of how roads behave - 59 million videos, 5 trillion images, and roughly 200 million fresh miles arriving every month. The dashcam is a sensor. The asset is the data.
Greenberger took the CEO seat on September 20, 2024, succeeding co-founder Eran Shir, who moved to Chief Product Officer. Co-founder Bruno Fernandez-Ruiz stayed on as CTO. Aleph's Michael Eisenberg, a board member, called Greenberger “uniquely equipped to scale the business to new heights.” The mandate was blunt: take a remarkable pile of data and turn it into a business the size of its ambition.
His thesis about self-driving is quietly contrarian. The industry keeps reaching for more compute. Greenberger reaches for more edge cases - the rare, weird, unrepeatable moments no simulator dreams up. “Real world, edge case data is not only the key input to moving AVs to full autonomy,” he has said. In his telling, the last mile of autonomy is not a modeling problem. It is a reality problem.
Greenberger did not arrive by way of a research lab. He started at IBM as a strategic sourcing consultant, learning the unglamorous discipline of how large organizations actually buy things. At Tesla he ran supply - Global Group Manager across sales, delivery and operations, and a global supply manager in indirect procurement. Then Lyft, where he climbed to Chief Business Officer.
Lyft is where the shape of the Nexar job first appeared. He built integrated brand partnerships, disrupted healthcare transportation, and stood up an advertising business projected to throw off hundreds of millions in revenue by 2027. But he says he is proudest of the softer math: millions of drivers earning, tens of millions of riders moved. Sourcing, supply chain, business-building - three separate educations that Nexar asked him to run at once.
He is candid about the one credential he lacks. He was not trained as an engineer or a scientist. His answer is almost a mantra: “You can quickly become an expert and knowledgeable about any topic despite your background.” He now mentors students and young professionals on exactly that - that expertise is less a diploma than a decision to keep learning.
On July 1, 2026, Nexar and Nauto agreed to merge into an independent infrastructure platform for the Physical AI era - more than 300 million real-world miles a month across 50-plus countries, on top of a historical dataset north of 10 billion miles. Greenberger will be CEO of the combined company; Nauto founder Stefan Heck will chair the board. The pitch is radical in its restraint: don't build the cars, don't pick the winners, just keep the honest, anonymized record. That structural independence, they argue, is exactly what makes the record trustworthy.
“From the moment I met Eran and Bruno, I knew this company was poised for great success.”
“Be yourself, everyone else is taken.”
“You can quickly become an expert about any topic despite your background.”
At Lyft, Greenberger stopped chasing balance and started chasing something he calls work-life integration - showing up as his authentic self in service of a mission, rather than partitioning the two. It sounds like a slogan until you notice how consistently he credits other people for his success: his fiancee, his family, his friends, his colleagues. They “make me better,” he says, and he means it as a strategy, not a courtesy.
He was drawn to Nexar's founders for a very specific reason - their ability, in his words, to “transcend boundaries, dance with complexity, and bend reality to imagination.” It is the kind of sentence a spreadsheet person does not usually write. Greenberger, it turns out, is a supply-chain operator with a poet's turn of phrase.
There is also an off-the-clock ambition. Beyond scaling Nexar, he has said he wants to start a movement for respectful debate - a way for people to disagree hard while still hunting for common ground. For someone whose day job is building a neutral, independent record of physical reality, it is a fitting hobby: an insistence that the facts can be shared even when the opinions are not.
And there is the paradox at the center of his company. Nexar's power comes from millions of individual drivers, yet every one of them is anonymized and de-identified. The collective is only trustworthy because the individuals disappear into it. His favorite quote celebrates individuality; his platform depends on dissolving it. He seems entirely comfortable holding both.
He runs an AI data company without an engineering or science degree. His MBA is from Johns Hopkins' Carey Business School.
His bet on autonomy favors rare edge-case data over raw compute - the weird road moments simulators never invent.
Nexar is routinely mistaken for a dashcam maker. He frames it as a crowdsourced data platform in disguise.
His guiding line is six words long: “Optimism is a happiness magnet.” He treats it as a hiring philosophy.
Zach Greenberger is the CEO of Nexar, the New York-based real-world intelligence platform building the data backbone for the Physical AI era. A self-described non-engineer who taught himself the technology, he came up through IBM, Tesla, and Lyft (where he was Chief Business Officer) before taking the top job at Nexar in September 2024. Under his watch Nexar agreed to merge with Nauto in July 2026, uniting a dataset of more than 10 billion driving miles and creating an independent platform of record for how the physical world actually behaves.
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