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![tb_travis Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::115800646.png) Let's Talk Joby [@tb_travis](/creator/twitter/tb_travis) on x 1694 followers
Created: 2025-07-14 14:09:15 UTC

Grok is estimating the new $JOBY aircraft’s tank is ~200kg capacity.

Context:
The $JOBY S4 hydrogen electric hybrid aircraft already flew 500mi  w/ a 40kg tank. 4hr 45min endurance.

IF, IF… Grok’s tank size estimate is even close to accurate, this new aircraft could potentially have an endurance capacity of 20+ hours and  2,500+ miles* 🤯 

*Not factoring any efficiency gains for new propulsion design

📸 Credit: @hntrbrkmedia

![](https://pbs.twimg.com/media/Gv0t68DWAAAlo44.jpg)

XXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1944761112651805094/c:line.svg)

**Related Topics**
[hybrid](/topic/hybrid)
[joby joby](/topic/joby-joby)
[$joby](/topic/$joby)

[Post Link](https://x.com/tb_travis/status/1944761112651805094)