It's rechargeable and very portable, which is hard to beat, and there aren't many (what?) other options like this . And in the end he does what he has to do, inflate tires. I've only used it on my mountain bike and basketballs and they're fine. I don't know what it's like to inflate a car tire. Cons - The threaded cap is difficult to remove and you will release a lot of air (this picture shows it has a push button but the one I got was a screw cap). The user interface is shaky. You must press the device button and then pause it before you can press the power button. Sometimes it's just an agony, hunched over a bike tire to dig the device's button and stare at the screen. And it's getting damn hot.