The video ad in the Internet says this can inflate within 1 minute. Not true in my case. I have Accord 2003 and the idle rpm is pretty low. Plugged the hose into the exhaust and the air jack inflated very slowly. The pressure of the exhaust is no where near strong enough to lift the car. I even use my small 1.5hp wet vac that can be converted to a blower. No dice, this needs a lot more air pressure. I'm too busy to return this. I may rig something in future to use this for something else. DISAPPOINTING..