> I would only point that 25 tons of force, isn't really a lot - I mean, the small jack that you use to lift your car can be a 5 or 6 ton device. Floor jacks e

> I would only point that 25 tons of force, isn't really a lot - I mean, the small jack that you use to lift your car can be a 5 or 6 ton device. Floor jacks easily punch through most points on modern cars. In fact, the only place that it is safe to jack up your car are special jack points which are reenforced to bear the load of the jack. The center ones on my car are pretty annoying to get to. Also, your estimate for the ratings of jacks is off by a factor of x2 to x4. Floor jacks, which have a leaver and a hydraulic component, are typically only rated for 2 to 3 tons. Scissor jacks, a manual jack that comes with your spare tire, are typically only rated at 1.5 tons or less.