I just bought a redi-rack or a handi-rack or something ... I bet you could find it googling "garage ceiling rack" it holds 600 lbs and is 4x8 feet and adjustable from 12- (i think) 27 inches tall. Perfect to put over a car and free up space elsewhere.
I think this is what we got--
http://www.saferacks.com/ whatever, it is really handy as it utilizes space otherwise completely wasted