Ditch your car's unwieldy (and sometimes unsafe) mini-jack and pick up a Exhaust Air Jack . Available in 7 models, this jack uses a hose connected to your car's exhaust pipe to inflate smoothly and quickly, lifting your vehicle up to 30 inches off the ground, and giving you plenty of space to work. It can stay inflated for up to 45 minutes, and can deflate in just 5 seconds, getting you back on the road in no time.