I always take this with my tire repair kit on trips, it takes up really little space and can be providential. I've only used it a few times. once. Mainly to adjust the pressure every month or two. I once had a tiny leak and was able to inflate a tire from a nearly flat tire in about 2 minutes. My bike is relatively small (Buell Blast) so it may take longer with larger tires. I don't think I would recommend it for cars as I think it would take too long to fill a car tire. see other reviewers had problems with the pressure gauge. Mine seems to be working fine. I don't know if it's accurate because I don't have another one to compare it to, but I can say I'm getting stable readings as soon as I attach it to the pole. The little compressor vibrates a lot during inflation, so the needle vibrates too, but you can still get decent readings and when you get close to the pressure you really need, just cycle the compressor on and off every 20 seconds to switch to get a close reading. read. I've only used it a couple of times so can't say if it will stand the test of time but for now I'm very satisfied and would buy again. A big improvement would be adding a cable with clamps for the direct battery as many bikes don't have a cigarette lighter port. I had to modify the original cable with a couple of spare clips I already had. It really was a two minute job and I already knew I had to do that before I bought this inflator, but if anyone is reading from Antigravity I think they should consider adding a cable with clamps.