Portable air tanks

I carry a small AC compressor I found at HD on sale for $25 several years ago. That, along with my 25 foot extension cord, will allow me to air up my tires by simply running the generator a few minutes. How often do I use it? Once. And that was to help the guy with a low tire a few spots away in a NF campground. Sorta like this one and it put 70 psi into a front tire on the guys Class C in about three minutes. I check my tires before and during trips and just have never had a problem with them leaking air. Just lucky and good maintenance.

https://www.homedepot.com/p/Husky-120-Volt-Inflator-HY120/202871788