I will be taking delivery of my first Z3 (3.0) in late July. My question is how do those of you who have hardtops store them when they are not being used? I have seen references to some sort of roller type dolly, but haven't seen it advertised. My wife had a Miata a few years ago and there was a neat after-market pulley and strap rig that allowed you to simply hoist the top up in the air and drive out from under it. We would leave there during all the top-down months. It didn't affect any garage floor space. Anything like this available for the Z3?