Check this out as a space saving alternative. I just purchased one, and really like it so far. It may not be ideal for Cobras and very low ground clearance cars, but man is it handy, without taking up lots of space. When not used, my SVT Focus parks right over top of it! One could always cut some concrete to recess it in the floor to gain drive-over clearance, or run some ramps along side as well. At any rate, it was exactly what I've been looking for, and thought some of you may find it appealing as well.
http://www.bendpak.com/DB-Interfaces...9&ProductID=47
Dave