Helium is used in Goodyear tires to detect leaks during the manufacturing process. It's a very small atom, so it can easily escape through even the tiniest holes. This makes it an effective way to identify any flaws in the tire's construction before it leaves the factory.

Here's why helium is ideal for this purpose:

* Lightweight: Being the lightest element, it's easier to detect leaks with helium.

* Inert: It doesn't react with other materials, ensuring the test results are accurate.

* Abundant: Helium is relatively abundant, making it a cost-effective option for mass production.

Goodyear's use of helium is just one example of how this noble gas is utilized in various industries.