I live where they have deer hunts (lots of deer) - I have never hit one and I do not drive slow, though largely attributed to luck ( i.e my wife was hit BY a deer - ran into the side of the car while she was going 25MPH). IMO with thermal sensors - expected because they would be best for seeing people - and much better low light vision / motion detection etc - and truly focused attentive driver, the deer strikes will be reduced - thus the work "likely" - not completely eliminated. Your reply seems to imply that just because you did not see it is was not visible, I do not mean this a s a personal criticism, my point being that humans are really not good observers.