That makes sense , I always forget about the federal vs State interests thing in the US . My country doesn ' t produce cars domestically so we import them . Most of them need to be modified anyway before they are allowed to be sold here . Different exhausts filters , indicators , mirrors , etc So all our government had to do when they change seatbelt laws is add must have rear seatbelts to the long list of requirements regulating car imports . <| sep |> We would be happy to note the suggestion and feedback in regards , especially the specifics you ' ve provided us . Be sure to let us know if anything changes , thank you for your understanding in the matter . JE <| sep |> Which is why there are retractable walls attached . Apparently it was a concern the architect ' s wife also had .