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Zach Greenberger & Eran Shir on Nexar’s Dominating the AV Market, Real-World Data Moats & the Playbook for Building an Agentic Company

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Feb 18, 2026
Eran Shir, Nexar co-founder and CPO — serial entrepreneur with a background in complex systems and ML. Zach Greenberger, Nexar CEO — ex-Lyft/Tesla leader building AI for the physical world. They dive into massive real-world driving data collection, crowdsourced vs fleet strategies, data moats for rare edge cases, building world models, and turning the company agentic to rapidly prototype city and safety applications.
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ADVICE

Monetize Existing Fleets, Don’t Rebuild Them

  • If you control an asset base (e.g., drivers), monetize data with incentives rather than expensive captive fleets.
  • Eran Shir suggests equipping existing drivers with cameras and perks to scale data cheaply.
INSIGHT

Real-World Data Powers World Models

  • The web-era data scrape is saturated; physical AI needs fresh real-world inputs to build world models.
  • Eran Shir frames world models as intuitive physical understanding that only real data can train.
ANECDOTE

Wild Edge Cases Captured On Dashcams

  • Nexar captured bizarre events like cars flying after collisions and kangaroos, showing dashcams' unique coverage.
  • Eran Shir and Zach recount these oddities as examples of rare edge cases the network records.
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