David | Tesla Tech & SI

Want to know exactly who unfollowed you on X and get a daily update on your new followers? My unfollow Bot does it every morning. It takes a snapshot, flags real unfollows (and separates suspended accounts), and shows you the new ones. Detection only. No actions taken. Just the data. Built with Grok. x.ai/bot/CMnwGtB1QgWoOGSCydJ…

I wanted to thank everyone for the tremendous support today. X is such a great community; I'm so blessed. I'll follow back everyone, but X only lets you follow so many at a time.

Early reviews of FSD v14.3.13 are mixed. Some drivers note cleaner highway lane changes and solid parking vs 14.3.12, but others report regressions: more aggressive nags, late lane decisions, and persistent navigation quirks. My take from the reports: it still over-prefers left turns (and left-turn lanes) when a right turn or continuing straight would be cleaner or match the route better. That’s a recurring complaint across recent 14.3 builds, not unique to this point release, but it stands out in daily driving. Fleet context: FSD Supervised just crossed 17B+ cumulative miles (~6.8B city). Biggest real-world dataset by a wide margin, and safety numbers continue to improve overall. #FSD #Tesla

Do you talk to your Full Self-Driving car? Me to FSD: “Get over NOW—don’t jam in last minute!” “Why are you turning left here and not the right turn ahead?!” Who else is out here having full-on conversations (or arguments) with their Tesla? 😂 #FSD #Tesla #FullSelfDriving

Good morning! ☀️ Rise, shine, and make today count. What’s one win you’re aiming for today? #GoodMorning #MorningVibes

2 weeks with Grok Bot and I’m still amazed. This isn’t just another AI chat. It’s a persistent teammate that keeps memory across everything, runs on its own cloud computer 24/7, executes routines while you’re away, and signs into your tools to actually finish the work. Whatever you can imagine, it can do. Truly next level. #GrokBot #xAI

When do you put the tree up — and are the lights on a smart plug, timer, or voice command? Team Early + Automated or Team After Thanksgiving + Classic?

Chinese team just hit 3.2 Pb/s on a single 24-core fiber (real-time, bidirectional, 10.3 km). That’s 20,000+ 4K movies in one second — or enough bandwidth to make AI data centers feel local. With speeds like this I’d stop “downloading” and start: • Syncing entire model training sets between clusters in seconds • Streaming true holographic telepresence • Pulling full digital twins of cities or factories on demand Backbone capacity is no longer the bottleneck. What we do with speeds like this.

Good morning! ☀️ Starting the day the right way — charged up, automated, and ready to roll. What’s the first win on your tech list today? #GoodMorning #Tesla #HomeAutomation

I am ready.

🚨 iPhone Duo CrackGate update Apple has now briefed its stores on how to handle the cracking inner screens. Staff are told to examine units and repair/replace under normal procedures — don’t assume it’s user damage. The pattern is consistent: crack along the hinge (usually lower half), often with a bright stuck-pixel line, sometimes after just a few folds. Apple admits a “small number” of units are affected and is offering AppleCare replacements. Teardowns point to a hinge weak point (center support not fully retracting / thin notched link). Add in the under-display FaceTime camera that reviewers are calling soft/smudgy (reportedly ~4MP), and the $1,999 foldable is off to a rocky start. If your Duo cracks, take it in. #CrackGate #iPhoneDuo #Apple

Elon just said the quiet part out loud: “The cost of serving Grok Bot was unsustainably high relative to revenue.” Grok Bot (the agentic one that actually does things) scaled fast — hundreds of thousands of paid users in a couple months. But agents aren’t chat. They keep burning compute in the background. Flat $30–$200 subscriptions + linear GPU costs = math that doesn’t work yet when people actually use it hard. This is the real constraint on AI agents right now. Not demand. Unit economics.

X algorithm update just hit — impressions have dropped hard for a lot of accounts. Recent changes adjusted how the For You feed trims candidates (more equal cut instead of dumping newest posts first). Early engagement and dwell time still matter most. Anyone else seeing the same drop right

Good morning, everyone! Wishing you a great start to the week. Please stay safe out there in Arizona—the flooding the last few days has been no joke. Drive carefully, avoid flooded roads and washes, and look out for each other. Here’s hoping the week ahead is calmer for all of us. 🌵

What's going on, Apple?

900 followers — thank you! 🙏✨ So grateful for this community. From Tesla and SI to the little tips that make the day better, you’ve made the journey fun. Onwards to 1K! 🚀 #Tesla #SI #XFamily @TeslaBTYLUV44

We do deserve RAM.

What if you woke up, opened your phone, and this was just… sitting there? Tesla Optimus Reserve now $30,000 est. · $100 deposit Est. delivery 2027 5’8” · 125 lb Would you actually put the deposit down? Because I think I would. #Tesla #Optimus

31 days in with FSD on the Model Y. 76% of miles so far (895 of 1,182). Longest streak: 47.6 miles. Maps are still the biggest thing holding me back—would be higher without those. How are your numbers looking?

Just 19 verified followers away from 500 🔵 And only 12 away from 900 total 🚀 Who’s helping me cross both milestones today? Drop a follow if you’re not already in 👇