I designed them and had them made. Basically they are a concealed steel frame, hydro cylinders, pulleys, ss cable, ss hydro lines, a hydro manifold, solenoids, valves, photoelectric sensors, a small computer, elevator buttons. You'll need structural engineering and a good consulting engineer to guide you but it can be done. The doors which are also part of the system require special fabricated tracks etc. Depending on level of fit and finish you can expect to spend about what a New Ford GT lists for up to what they ask for one in the UK. (3 lifts, 2 garage doors and the cost of installation and modification of your garage. Remember you may have to raise your roof.) There are also building codes and safety issues to be solved as the steel structure must go into solid foundation. While your ripping up your garage floor you may want to install a hot water heating system into it. How about dehumidification? The list goes on...
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