Update: After some flip-flopping, it seems that all configurations of the Nexus 5 are no longer showing out of stock. The bad news – Google is really just indicating multiple week wait times for each version rather than saying it's out of stock. It's 3-4 weeks for the 16GB variants and the white 32GB. The black 32GB is backordered 2-3 weeks right now. Hopefully you got your order in!
If you were hoping the Nexus 5 would not suffer any of the stock shortages that plagued the Nexus 4 launch, I'm sorry to be the one to shatter your carefully constructed fantasy world.