Air jacks were first invented for and used by extreme off-roaders. When a 4x4 is miles from civilization and gets a flat on a rock-strewn incline, a regular jack just isn't going to work. To make matters worse, you're going to have a real problem getting a tow truck out there -- if you can get cell phone reception to call for help in the first place. But tough, inflatable exhaust jacks could get a truck lifted and a tire off the ground anywhere, no matter the surface or the angle of the ground where the vehicle is sitting.
The gadgets that got off-roaders out of trouble now have uses beyond motorists stranded on the side of the highway with a flat tire. Cars stuck in snow, mud, sand or any other surface where tires are spinning instead of grabbing traction can be rescued by using an exhaust air jack rather than waiting for assistance. Drivers in colder climates can avoid getting stranded in inclement weather by using them to quickly install snow chains for extra traction, but keep in mind that snow chains can severely limit the car's maximum speed and fuel efficiency. If you're towing something in a trailer, you can use them to stabilize the cargo in your trailer. Even farmers in tractors stuck out in the back forty can use exhaust air jacks to free themselves and continue working.
In addition, if you can use these air jacks to change tires, rotating them can be less of a chore (though those stubborn lug nuts are still up to you). As long as you have a running engine with an exhaust pipe and space for the bag under the frame, you'll have a way to use an exhaust air jack.
To learn more about exhaust air jacks and other automotive gadgets, please see the links on the next page.