I guess, I have a slow leak and the local places have air pumps, but aren't working. But having the AirMoto is sooooo much easier. I was able to fill up 3 tires on one charge. But two were really low. I just plug it in for awhile and then finished off the fourth tire.
Convenient, easy, and even faster than the gas station air pumps. Plus I just screw it on, instead of having to hold it on to the tire. It does make noise, but it's not obnoxious, and it is obvious when it's finished pumping.