Never a 'vs' scenario, always has to be an augmented/complimentary systems.
Considering road objects appear as the same colour in the system because FLIR doesn't detect colour, just heat gradients, you need light to see object detail (signs can appear a solid blank objects).
With the 2D screen you lose a lot of delth of field / 3D information which is bad as you speed towards objects, curves, etc.
To which I also prefer the old heads'-up display versus having it in the instrument cluster because it is less likely to have you take your eyes off the road to look at the screen. But it can be equally distracting, I just find that you're still looking forward instead of down though so more likely to 'snap out of it' should something distinct come into the field of view.
Also if the effective distance of the night vision is just "up to 100 yards / 50-300 feet" as mentioned in Cadillac's & Audi's videos, I think newer HID and LED headlights, plus good long-throw low angle driving lights can outdistance that effective range.
Still I like the idea of both great headlights and good night vision tech.
Audi, Cadillac, Mercedes tech (the BMW section is actually about Austrian billboards );
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And if you want to see Car and Driver test (poorly because plastic animals weren't heated) driving with just the FLIR from Audi, BMW & Merc watch this;
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