For the new house that we building this year, I am thinking about modular sections for a layout, not for my trains but for my new 1:32 slot car track. The planned layout tentatively will be 4'x12'. I'm thinking about modules that are 4' long and possibly 24" - 32" wide. Having had a large permanent crappy basement layout in the past, I'm looking for something that is modular so that it can be quickly disassembled and moved if needed. Light weight would also be a plus.
One of my biggest questions is how do you lock all of the modules together? Carriage bolts and nuts (possibly wingnuts) come immediately to mind, but what are some other options?