JK II
If you could not see the LED lights, perhaps they were not on !!
LED's are highly visible straight-on and at off-angle to about 45-60 degrees. At those extreme angles, you are not in danger because you are not behind the guy, you are in the other lane.
People constantly make a big issue about LED's not being as bright when viewed off angle, but the issue is that at such extreme viewing angles you are not directly behind the vehicle you are in another lane and nearly passing it.
Tiger,
I agree that if the lights are not visible they should be banned, but in the case you mentioned, It is probably the Altezza taillight design that is the problem, as well as poorly designed LED lights.
...Rich