The indicators are a tiny subset of the actual requirements involved in a production vehicle. In fact, there are examples of European production cars that can't be street legal in the US, and the companies involved chose to simply not sell them here. Smart cars were impacted by this for awhile (no crumple zones), they eventually dealt with the problem though, and as I recall there was a production ferrari that couldn't be driven here because ferrari chose to simply not sell in the US rather than conduct two crash tests or something like that. Can't recall the details.
"While most Porsches can import quite easily from Europe to the USA, the 959 had complications abound, making it impossible for US citizens to get their hands on one of these supercars. One of the citizens was Gates, who ordered a 959 from Porsche, only to have it impounded at customs. The reasoning provided to justify the impounding was that the 959 had not yet cleared crash-testing requirements and did not meet EPA standards. Gates’ German supercar sat idly by for over a decade."
