Been there. A friend and I once had our flight to Shreveport LA diverted to New Orleans. (Mechanical issues.) We decided to rent a car and drive rather than wait for the next flight. When we finally made it to Shreveport LA we couldn't find a room. No hurricane or anything, just a huge festival going on. A motel in Texarkana told us that every hotel and motel within a few hour radius was sold out. He suggested we head into Texas to find something. We gave up around 2 am. After driving all day an night, we ended up sleeping really uncomfortably in the rental car. Not an emergency, by any means, but I would given all my money for a tent and an air mattress.