Like anyone with a car, sometimes I have to put air in a low tire. The air cars I last wanted were 2.00 in quarters AND broke so I drove on low tire pressure and tried to find an ATM, someone at the store who would give me quarters and an air machine. Aggravating! This little buddy wasn't annoying. I plugged it in, started the car and with a tool my tire was full in just 2 minutes. Love it! I will be using this for my bike and all inflatables over the summer so well worth it!