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//Mapping to centimeter level Apr 19, 2026 Mapping the World with Bilawal Sidhu Anduril built a military headset that lets soldiers see through walls, overlay drone feeds, and track targets with AI. It costs a defense contract and $30k+ per unit. I wanted to see how close I could get with a $300 pair of Meta Ray-Bans and off-the-shelf visual positioning technology.

Turns out, you can get surprisingly close. A camera is all you need — no depth sensors, no LiDAR, no SLAM. Just a pre-scanned 3D map and a pair of consumer glasses. This video covers how VPS works, why GPS can't solve this problem, what it looks like when you can track someone through walls using a smartphone, and why this same technology will be in every robot, drone, and self-driving car on the planet.

This video provides an in-depth look at Tesla's cutting-edge manufacturing and robotics innovations, highlighting several key technological advancements:

The 50,000-Ton Giga Press (0:00 - 12:30) Tesla has pioneered a massive 50,000-ton die-casting machine designed to produce the entire underbody of next-generation vehicles (such as the Model 2 and Cyber Cab) in a single shot. This process significantly reduces the number of structural components and assembly steps, aiming for extreme production efficiency and speeds where a vehicle could potentially roll off the line in under five seconds (0:38).

Tesla Dog Robot & Optimus (17:18 - 35:45) Tesla is developing a four-legged robot (Tesla Dog), intended for security and surveillance, designed with a focus on agility and affordability (estimated around $5,000) using technology derived from the Optimus humanoid project (18:18). The Optimus humanoid robot is showcased for its unique collaborative learning system (30:45), which allows it to learn tasks by watching videos and sharing that knowledge across the global fleet, enabling rapid skill acquisition for household or industrial labor.

Battery Technology: 4680 vs. Solid State (35:50 - 54:47) The video compares Tesla's 4680 battery cells, which utilize an innovative tabless design for higher efficiency and lower costs (38:48), against emerging solid-state battery technology. While solid-state batteries (pioneered by companies like Toyota) offer superior energy density, faster charging, and improved safety, they currently face significant hurdles regarding manufacturing costs and scalability compared to Tesla’s established production capabilities.

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https://www.youtube.com/watch?v=hMlvshewwc4