I found these two vintage 1960s crash test videos of the Nissan Bluebird on Youtube. The first video shows the crash tests of a dummy sitting on the rear seat of a Nissan Bluebird 410 crashing at 50 km/h and 100 km/h:

Nissan Bluebird 410 crash test

Most probably these tests were done to see the impact of wearing seat belts at the rear seat at 50 and 100 km/h. As you can see the 410 two point seatbelt is pretty useless at 100 km/h: the seat belt fails due to the force of the impact and the dummy is launched and beheaded by the dashboard. Lovely slow-motion replays at the end of the video!

But believe me: even though the carnage looks bad, for that time these tiny 410s were quite safe! Compare that with these GM crash tests! But I still wouldn't want to be beheaded by my own dashboard...

The second video shows the Nissan Bluebird 510 crash test at 40 km/h, creating a chain crash a few other 410s and a (new?) 510:

This test is actually very ingeniously done: no remote operated brakes, just a plain and simple wirecutter activating the brake system! It is like watching the Mythbusters from 1968! ;)

This test shows the advantages of using both a headrest and a seat belt. In the slow-motion footage at the end you can see that the dummy in the front car stays in place even after this car gets hit three times! The headrest saves the dummy from breaking its neck, while clearly the dummy of the second car wasn't that fortunate: it hits both the windscreen and breaks its neck due to the front seat lacking a headrest.

Another thing becomes clear with this test: the 510 is a lot safer than the 410! Even though 410s receives a lot of damage on both front and rear ends while the 510 (third in row) crumples a lot more than the 410 to reduce the force of the impact.

I'm glad I'm driving a bit more modern car than these two! However, I seriously doubt a 27 year old car is considered safe according to nowadays standards...

Cannabolic (user on AEU86) found this video on Youtube showing a sideways impact on a Toyota AE86:

It is a bit hard to see, but the car is a LHD zenki Trueno 2 door coupe. I assume that it is a USDM Corolla SR5 since it has black bumpers. Not much is left of the position the driver is supposed to be in, so side impact on this speed is not recommendable! What did I drive up to two years ago? A silver 4AGE converted US SR5 2 door coupe! Damn! That's exactly the same car!

What about its source? Maybe it was a promotion video for OMP roll cages? More likely it is an original 80s US crash test before the car is allowed to be sold on the market? That leave us the question why a sideways impact on high speed is part of this test?

Of course: they could also have wanted to find out if the car was safe enough for its main purpose 20 years later: going sideways! Clearly going that way leaves a lot less crushable area than going in a straight line. ;)