Hydrogen vs. Gasoline Leak and Ignition Test- which is safer?
Why Hacker News recommends it
HN cites it in hydrogen car debates, with some seeing it as evidence of relative safety and others finding it unconvincing.
What it is
A 2001 University of Miami experiment ignites a leak from a gasoline fuel line in one car and a leak from a hydrogen connector in another. The hydrogen fire burns out quickly while the gasoline fire consumes its car.
Recommended by 1 HN commenters across 1 different months, 2023 to 2026.
What Hacker News said
Recommends sandworm101 · 2026-02 · on “The Modern Toyota That Lost 65% of Its Value in One Year”
Safer than liquid fuel. There are videos out there of what a leak+fire looks like on a hydrogen and gasoline car. You would rather be trapped in the hydrogen car. [this video]
Cites petre · 2023-10 · on “Oil sector is lobbying for inefficient hydrogen cars to delay electrification”
The firefighters will mainly sit and watch while H2 gets vented or burns off. A lithium battery fire is much more worse, not even mentioning the smoke. [this video]
Critical jodrellblank · 2025-08 · on “GPT-5”
I'm particularly salty about the Hindenburg and don't feel as strongly about Chernobyl, Fukushima, Challenger, so if you're referring to those, that's different. The Hindenburg didn't use Hydrogen for cost reasons, it was designed to use more expensive Helium and the US government refused to export Helium to Nazi controlled Germany, so they redesigned it for Hydrogen. I'm not saying that it wasn't representative of air travel at the time , I'm saying air travel at the time was unsafe and airships were well known to be involved in many crashes, and the Hindenburg was not particularly less safe, it's just that aeroplanes were much smaller and carried fewer people and the accidents were less sp